Author: "Debrabandere, S." - Searchworks@Jio Institute Digital Library Search Results

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102 results on '"Debrabandere, S."'

1. Measurement of inclusive K(0)(892), phi(1020) and K-2(0)(1430) production in hadronic Z decays

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G., Alemany, R., Allport, P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M., Antilogus, P., Apel, W., Arnoud, Y., Asman, B., Augustin, J., Augustinus, A., Baillon, P., Bambade, P., Barate, R., Barbi, M., Bardin, D., Baroncelli, A., Barring, O., Barrio, J., Bartl, W., Bates, M., Battaglia, M., Baubillier, M., Baudot, J., Becks, K., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A., Berggren, M., Bertini, D., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T., Bozzo, Marco, Branchini, P., Brand, K., Brenke, T., Brenner, R., Bricman, C., Brown, R., Bruckman, P., Brunet, J., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., Rozas, A., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., Gimenez, M., Cattai, A., Cavallo, F., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H., Crennell, D., Crosetti, G., Maestro, J., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavassiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K., Dris, M., Durand, J., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J., Erzen, B., Santo, M., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Fichet, S., Filippas, T., Firestone, A., Fischer, P., Foeth, H., Fokitis, E., Fontanelli, Flavio, Formenti, F., Franek, B., Frenkiel, P., Fries, D., Frodesen, A., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E., Gele, D., Gerberg, J., Gerdyukov, L., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Gresdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F., Hedberg, V., Henriques, R., Hernandez, J., Herquet, P., Herr, H., Hessing, T., Higon, E., Hilke, H., Hill, T., Holmgren, S., Holt, P., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E., Keranen, R., Khokhlov, Y., Khomenko, B., Khovanski, N., King, B., Kjaer, N., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J., Lanceri, L., Lane, D., Langefeld, P., Lapin, V., Last, I., Laugier, J., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J., Lopez, J., Loukas, D., Lutz, P., Lyons, L., Maehlum, G., Maio, A., Malmgren, T., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garvia, S., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, MARIA ROBERTA, Morettini, P., Mueller, H., Muenich, K., Mundim, L., Murray, W., Muryn, B., Myatt, G., Naraghi, F., Navarria, F., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B., Niewenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T., Papageorgiou, K., Pape, L., Parkes, C., Parodi, Fabrizio, Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, Alessandro, Petrovyck, M., Phillips, H., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P., Read, A., Reale, M., Rebecchi, P., Redaelli, N., Regler, M., Reid, D., Renton, P., Resvanis, L., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, Mario, Schimmelpfennig, M., Schneider, H., Schwickerath, U., Schyns, M., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R., Siccama, I., Siegrist, P., Simonetti, S., Simenetto, F., Sisakian, A., Sitar, B., Skaali, T., Smadja, G., Smirnov, N., Smirnova, O., Smith, G., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, Sandro, Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L., Todorov, T., Todorova, S., Toet, D., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M., Tyapkin, I., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vanapeldoorn, G., Vandam, P., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A., Wicke, D., Wickens, J., Wielers, M., Wilkinson, G., Williams, W., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N., Zito, M., Zontar, D., Zucchelli, G., Zumerle, G., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Particle physics, Meson production, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, VECTOR, production rate, 01 natural sciences, Partícules (Física nuclear), DELPHI, neutral vector meson, tensor meson, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], MESON, GEV/C, Tensor, Neutral vector, 010306 general physics, Detectors de radiació, Physics, 010308 nuclear & particles physics, Mass spectrum, Production (computer science)
Abstract: The inclusive production of the neutral vector mesons K-*0(892) and phi(1020), and of the tensor meson K-2(*0)(1430), in hadronic decays of the Z has been mea sured by the DELPHI detector at LEP. The average production rates per hadronic Z decay have been determined to be 0.77 +/- 0.08 K-2(*0)(892), 0.104 +/- 0.008 phi(1020) and 0.079 +/- 0.040 K-2(*0)(1430). The ratio of the tensor-to-vector meson production yields, [K-2(*0)(1430)]/[K-*0(892)] = 0.10 +/- 0.05, is smaller than the [f(2)(1270)]/[rho(0)(770)] and [f'(2)(1525)]/[phi(1020)] ratios measured by DELPHI. The production rates and differential cross sections are compared with the predictions of JETSET 7.4 tuned to the DELPHI data and of HERWIG 5.8. The K-*0(892) and phi(1020) data are compatible with model predictions, but a large disagreement is observed for the K-2(*0)(1430).
Published: 2016
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2. A study of the reaction ${e^+ e^- \rightarrow \mu^+ \mu^- \gamma_{\sc ISR}}$ at LEP and search for new physics at annihilation energies near 80 GeV

Author: Abreu, P, Adam, W, Adye, T, Ajinenko, I, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andersson, P, Andreazza, A, Antilogus, P, Apel, Wd, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbi, M, Barbiellini, G, Bardin, Dy, Barker, G, Baroncelli, A, Barring, O, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Benvenuti, Ac, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bizouard, Ma, Bloch, D, Blume, M, Bonesini, M, Bonivento, W, Booth, Psl, Borgland, Aw, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozovic, I, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cindro, V, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, Jh, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Depaula, L, Dijkstra, K, Diciaccio, L, Didiodato, A, Djannati, A, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Durand, Jd, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Erzen, B, Santo, Me, Falk, E, Fanourakis, G, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrari, P, Ferrer, A, Fichet, S, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, D, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gerdyukov, L, Gokieli, R, Golob, B, Goncalves, P, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Green, C, Grefrath, A, Gris, P, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Harris, Fj, Hedberg, V, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Heuser, Jm, Higon, E, Hilke, Hj, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klapp, O, Klein, H, Kluit, P, Knoblauch, D, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kreuter, C, Kronkvist, L, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leisos, A, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Libby, J, Liko, D, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Maehlum, G, Mahon, Jr, Maio, A, Malmgren, Tgm, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Meroni, C, Meyer, S, Meyer, Wt, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Muenich, K, Mulders, M, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Myklebust, T, Naraghi, F, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Nikolenko, M, Niss, P, Nomerotski, A, Normand, A, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pain, R, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Piana, D, Pierre, F, Pimenta, M, Podobnik, T, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Regler, M, Radojicic, D, Ragazzi, S, Rahmani, H, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Reid, D, Reinhardt, R, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Rohne, O, Romero, A, Ronchese, P, Roos, L, Rosenberg, Ei, Roudeau, P, Rovelli, T, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sahr, O, Sajot, G, Salt, J, Sannino, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Serbelloni, L, Shellard, Rc, Siegrist, P, Silvestre, R, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Solovianov, O, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stampfer, D, Stanescu, C, Stanic, S, Stapnes, S, Stavitski, I, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Tegenfeldt, F, Terranova, F, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Todorova, S, Toet, Dz, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vanlysebetten, A, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Wlodek, T, Yi, J, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zucchelli, Gc, Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), DELPHI, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and LEP (IHEF, IoP, FNWI)
Subjects: Physics, Particle physics, Annihilation, Photon, Muon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Physics beyond the Standard Model, Electron–positron annihilation, 01 natural sciences, Helicity, Standard Model, Nuclear physics, 0103 physical sciences, Large Electron–Positron Collider, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Particle Physics - Experiment
Abstract: A study of the channel $e^{+}e^{-}~\rightarrow~\mu^{+}\mu^{-}\gamma_{\ sc ISR}$, where $\gamma_{\sc ISR}$ is an initial state radiation photon, is presented using data collected by the DELPHI experiment from 1991 to 1994. The total cross-section at effective annihilation energies ($\sqrt{s'}$) below the $Z^0$ peak is obtained by using the events with relatively hard initial state radiative photon(s) ($E_{\gamma}~ ~$~1~GeV). The differential cross-section as a function of the muon polar production angle is also determined in order to extract t s alhe forward-backward asymmetries for the reaction $e^+ e^- \rightarrow \mu^+ \mu^-$ at energies $\sqrt{s'}$ between 20 and 87~GeV. The ratio of the helicity cross-sections $\frac{\sigma_{LL}+\sigma_{RR}}{\sigma_{RL}+\sigma_{LR}}$, where the two subscripts stand for the helicities of the incoming $e^-$ and outgoing $\mu^-$ respectively, is extracted from the differential cross-sections in order to test the Standard Model and to look for new physics near 80 GeV. No deviations from the Standard Model were found.
Published: 1997
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3. Cross-sections and leptonic forward-backward asymmetries from the Z0 running of LEP

Author: Abreu, P. Adam, W. Adye, T. Adzic, P. Alekseev, G.D. Alemany, R. Allport, P.P. Almehed, S. Amaldi, U. Amato, S. Anassontzis, E.G. Andersson, P. Andreazza, A. Antilogus, P. Apel, W.-D. Arnoud, Y. Åsman, B. Augustin, J.-E. Augustinus, A. Baillon, P. Bambade, P. Barao, F. Barbier, R. Bardin, D.Y. Barker, G. Baroncelli, A. Battaglia, M. Baubillier, M. Becks, K.-H. Begalli, M. Beilliere, P. Belokopytov, Y. Benvenuti, A.C. Berat, C. Berggren, M. Bertini, D. Bertrand, D. Besancon, M. Bianchi, F. Bigi, M. Bilenky, M.S. Bizouard, M.-A. Bloch, D. Bonesini, M. Boonekamp, M. Booth, P.S.L. Borgland, A.W. Borisov, G. Bosio, C. Botner, O. Boudinov, E. Bouquet, B. Bourdarios, C. Bowcock, T.J.V. Boyko, I. Bozovic, I. Bozzo, M. Branchini, P. Brenke, T. Brenner, R.A. Bruckman, P. Brunet, J.-M. Bugge, L. Buran, T. Burgsmueller, T. Buschmann, P. Cabrera, S. Caccia, M. Calvi, M. CamachoRozas, A.J. Camporesi, T. Canale, V. Canepa, M. Carena, F. Carroll, L. Caso, C. CastilloGimenez, M.V. Cattai, A. Cavallo, F.R. Cerruti, Ch. Chabaud, V. Chapkin, M. Charpentier, Ph. Chaussard, L. Checchia, P. Chelkov, G.A. Chen, M. Chierici, R. Chliapnikov, P. Chochula, P. Chorowicz, V. Chudoba, J. Collins, P. Colomer, M. Contri, R. Cortina, E. Cosme, G. Cossutti, F. Cowell, J.-H. Crawley, H.B. Crennell, D. Crosetti, G. CuevasMaestro, J. Czellar, S. Dalmagne, B. Damgaard, G. Davenport, M. DaSilva, W. Deghorain, A. DellaRicca, G. Delpierre, P. Demaria, N. DeAngelis, A. DeBoer, W. DeBrabandere, S. DeClercq, C. DeLotto, B. DeMin, A. DePaula, L. Dijkstra, H. DiCiaccio, L. DiDiodato, A. Djannati, A. Dolbeau, J. Doroba, K. Dracos, M. Drees, J. Drees, K.-A. Dris, M. Duperrin, A. Durand, J.-D. Ehret, R. Eigen, G. Ekelof, T. Ekspong, G. Ellert, M. Elsing, M. Engel, J.-P. Erzen, B. EspiritoSanto, M. Falk, E. Fanourakis, G. Fassouliotis, D. Fayot, J. Feindt, M. Fenyuk, A. Ferrer, A. Fichet, S. Firestone, A. Fischer, P.-A. Flagmeyer, U. Foeth, H. Fokitis, E. Fontanelli, F. Franek, B. Frodesen, A.G. Fruhwirth, R. Fulda-Quenzer, F. Fuster, J. Galloni, A. Gamba, D. Gandelman, M. Garcia, C. Garcia, J. Gaspar, C. Gaspar, M. Gasparini, U. Gavillet, Ph. Gazis, E.N. Gele, D. Gerber, J.-P. Gerdyukov, L. Ghodbane, N. Gil, I. Glege, F. Gokieli, R. Golob, B. Goncalves, P. GonzalezCaballero, I. Gopal, G. Gorn, L. Gorski, M. Gouz, Y. Gracco, V. Grahl, J. Graziani, E. Green, C. Grefrath, A. Gris, P. Grzelak, K. Gunther, M. Guy, J. Hahn, F. Hahn, S. Haider, S. Hallgren, A. Hamacher, K. Harris, F.J. Hedberg, V. Heising, S. Henriques, R. Hernandez, J.J. Herquet, P. Herr, H. Hessing, T.L. Heuser, J.-M. Higon, E. Holmgren, S.-O. Holt, P.J. Holthuizen, D. Hoorelbeke, S. Houlden, M. Hrubec, J. Huet, K. Hultqvist, K. Jackson, J.N. Jacobsson, R. Jalocha, P. Janik, R. Jarlskog, Ch. Jarlskog, G. Jarry, P. Jean-Marie, B. Johansson, E.K. Jonsson, P. Joram, C. Juillot, P. Kapusta, F. Karafasoulis, K. Katsanevas, S. Katsoufis, E.C. Keranen, R. Khomenko, B.A. Khovanski, N.N. Kiiskinen, A. King, B. Kjaer, N.J. Klapp, O. Klein, H. Kluit, P. Knoblauch, D. Kokkinias, P. Konopliannikov, A. Koratzinos, M. Kostioukhine, V. Kourkoumelis, C. Kouznetsov, O. Krammer, M. Kreuter, C. Kriznic, E. Krstic, J. Krumstein, Z. Kubinec, P. Kucewicz, W. Kurvinen, K. Lamsa, J.W. Lanceri, L. Lane, D.W. Langefeld, P. Lapin, V. Laugier, J.-P. Lauhakangas, R. Leder, G. Ledroit, F. Lefebure, V. Leinonen, L. Leisos, A. Leitner, R. Lemonne, J. Lenzen, G. Lepeltier, V. Lesiak, T. Lethuillier, M. Libby, J. Liko, D. Lipniacka, A. Lippi, I. Loerstad, B. Lokajicek, M. Loken, J.G. Lopes, J.H. Lopez, J.M. Lopez-Fernandez, R. Loukas, D. Lutz, P. Lyons, L. MacNaughton, J. Mahon, J.R. Maio, A. Malek, A. Malmgren, T.G.M. Malychev, V. Mandl, F. Marco, J. Marco, R. Marechal, B. Margoni, M. Marin, J.-C. Mariotti, C. Markou, A. Martinez-Rivero, C. Martinez-Vidal, F. MartiiGarcia, S. Mastroyiannopoulos, N. Matorras, F. Matteuzzi, C. Matthiae, G. Mazik, J. Mazzucato, F. Mazzucato, M. McCubbin, M. McKay, R. McNulty, R. McPherson, G. Meroni, C. Migliore, E. Mirabito, L. Mitaroff, W.A. Mjoernmark, U. Moa, T. Moeller, R. Moenig, K. Monge, M.R. Moreau, X. Morettini, P. Morton, G. Muenich, K. Mulders, M. Mulet-Marquis, C. Muresan, R. Murray, W.J. Muryn, B. Myatt, G. Myklebust, T. Naraghi, F. Navarria, F.L. Navas, S. Nawrocki, K. Negri, P. Neufeld, N. Neumann, W. Neumeister, N. Nicolaidou, R. Nielsen, B.S. Nieuwenhuizen, M. Nikolaenko, V. Nikolenko, M. Nomokonov, V. Normand, A. Nygren, A. Obraztsov, V. Olshevski, A.G. Onofre, A. Orava, R. Orazi, G. Osterberg, K. Ouraou, A. Paganini, P. Paganoni, M. Paiano, S. Pain, R. Paiva, R. Palacios, J. Palka, H. Papadopoulou, T.D. Papageorgiou, K. Pape, L. Parkes, C. Parodi, F. Parzefall, U. Passeri, A. Pegoraro, M. Peralta, L. Pernicka, M. Perrotta, A. Petridou, C. Petrolini, A. Phillips, H.T. Piana, G. Pierre, F. Pimenta, M. Piotto, E. Podobnik, T. Pol, M.E. Polok, G. Poropat, P. Pozdniakov, V. Privitera, P. Pukhaeva, N. Pullia, A. Radojicic, D. Ragazzi, S. Rahmani, H. Rakoczy, D. Ratoff, P.N. Read, A.L. Rebecchi, P. Redaelli, N.G. Regler, M. Reid, D. Reinhardt, R. Renton, P.B. Resvanis, L.K. Richard, F. Ridky, J. Rinaudo, G. Rohne, O. Romero, A. Ronchese, P. Rosenberg, E.I. Rosinsky, P. Roudeau, P. Rovelli, T. Ruhlmann-Kleider, V. Ruiz, A. Saarikko, H. Sacquin, Y. Sadovsky, A. Sajot, G. Salt, J. Sampsonidis, D. Sannino, M. Schneider, H. Schwemling, Ph. Schwickerath, U. Schyns, M.A.E. Scuri, F. Seager, P. Sedykh, Y. Segar, A.M. Sekulin, R. Shellard, R.C. Sheridan, A. Silvestre, R. Simard, L. Simonetto, F. Sisakian, A.N. Skaali, T.B. Smadja, G. Smirnova, O. Smith, G.R. Sopczak, A. Sosnowski, R. Spassov, T. Spiriti, E. Sponholz, P. Squarcia, S. Stampfer, D. Stanescu, C. Stanic, S. Stapnes, S. Stevenson, K. Stocchi, A. Strauss, J. Strub, R. Stugu, B. Szczekowski, M. Szeptycka, M. Tabarelli, T. Tegenfeldt, F. Terranova, F. Thomas, J. Tilquin, A. Timmermans, J. Tkatchev, L.G. Todorov, T. Todorova, S. Toet, D.Z. Tomaradze, A. Tonazzo, A. Tortora, L. Transtromer, G. Treille, D. Tristram, G. Trombini, A. Troncon, C. Tsirou, A. Turluer, M.-L. Tyapkin, I.A. Tzamarias, S. Ueberschaer, B. Ullaland, O. Uvarov, V. Valenti, G. Vallazza, E. VanderVelde, C. VanApeldoorn, G.W. VanDam, P. VanDoninck, W.K. VanEldik, J. VanLysebetten, A. VanVulpen, I. Vassilopoulos, N. Vegni, G. Ventura, L. Venus, W. Verbeure, F. Verlato, M. Vertogradov, L.S. Verzi, V. Vilanova, D. Vitale, L. Vlasov, E. Vodopyanov, A.S. Voulgaris, G. Vrba, V. Wahlen, H. Walck, C. Weiser, C. Wetherell, A.M. Wicke, D. Wickens, J.H. Wilkinson, G.R. Winter, M. Witek, M. Wlodek, T. Wolf, G. Yi, J. Yushchenko, O. Zaitsev, A. Zalewska, A. Zalewski, P. Zavrtanik, D. Zevgolatakos, E. Zimin, N.I. Zucchelli, G.C. Zumerle, G.
Subjects: High Energy Physics::Experiment
Abstract: During 1993 and 1995 LEP was run at 3 energies near the Z0 peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z0 peak. In total DELPHI accumulated data corresponding to an integrated luminosity of approximately 116 pb-1. Analyses of the hadronic cross-sections and of the cross-sections and forward-backward asymmetries in the leptonic channels used the most precise evaluations of the LEP energies. In the dimuon channel, events with a photon radiated from the initial state have been used to probe the cross-sections and asymmetries down to PETRA energies. Model independent fits to all DELPHI lineshape and asymmetry data from 1990 to 1995 have been carried out giving values of the resonance parameters: MZ = 91.1863 ± 0.0028 GeV ΓZ = 2.4876 ± 0.0041 GeV σ0 = 41.578 ± 0.069 nb R1 = 20.730 ± 0.060 AFB0 = 0.0187 ± 0.0019. These values are significantly more precise than those previously published. The results are interpreted in terms of the Standard Model.
Published: 2000

4. Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV

Author: Abreu, P., Adam, W., Adye, T., Ajinenko, I., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barbi, M., Barbiellini, G., Bardin, D. Y., Barker, G., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bizouard, M. A., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., Brown, R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Rozas, A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J. H., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declerq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Didiodato, A., Djama, F., Djannati, A., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gerdyukov, L., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Green, C., Grefrath, A., Gris, P., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Heuser, J. M., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klapp, O., Klein, H., Klovning, A., Kluit, P., Kokkinias, P., Konopliannikov, A., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Mahon, J. R., Malmgren, T. G. M., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Martinezrivero, C., Martinezvidal, F., Garcia, S. M. I., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Muenich, K., Mulders, M., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Podobnik, T., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Reinhardt, R., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. I., Roudeau, O., Rovelli, T., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., Schyns, M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siegrist, P., Silvestre, R., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, R. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Solovianov, O., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stampfer, D., Stanescu, C., Stanic, S., Stapnes, S., Stavitski, I., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tcherniaev, E., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Erik Silvio Vallazza, Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vanlysebetten, A., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Wlodek, T., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, G.
Subjects: PHYSICS, SUPERSYMMETRY, DECAYS
Abstract: A search for stable or long-lived heavy charged particles in e+e- interactions at energies of 130-136, 161 and 172 GeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge ±e and ±2/3e particles in the range of 0.4-2.3 pb for masses from 45 to 84 GeV/c2. Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c2 for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c2 can be excluded at 95% confidence level. © 1997 Elsevier Science B.V.
Published: 1997

5. Measurement of the transverse spin correlation in Z->tau(+)tau(-) decays

Author: Abreu, P, Adam, W, Adye, T, Ajinenko, I, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andersson, P, Andreazza, A, Antilogus, P, Apel, Wd, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbi, M, Bardin, Dy, Barker, G, Baroncelli, A, Barring, O, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Benvenuti, Ac, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bizouard, Ma, Bloch, D, Blume, M, Bonesini, M, Bonivento, W, Booth, Psl, Borgland, Aw, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozovic, I, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, Jh, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Depaula, L, Dijkstra, H, Diciaccio, L, Didiodato, A, Djannati, A, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Durand, Jd, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Erzen, B, Santo, Me, Falk, Me, Falk, E, Fanourakis, G, Fassouliotis, D, Feindt, M, Ferrari, P, Ferrer, A, Fichet, S, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gokieli, R, Golob, B, Goncalves, P, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Green, C, Grefrath, A, Gris, P, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Heuser, Jm, Higon, E, Hilke, Hj, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klapp, O, Klein, H, Kluit, P, Knoblauch, D, Koene, B, Kokkinias, P, Konopliannikov, A, Koratzinos, M, Korcyl, K, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leisos, A, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Libby, J, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Mahon, Jr, Maio, A, Malmgren, Tgm, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, Wt, Miagkov, A, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Muenich, K, Mulders, M, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Nikolenko, M, Niss, P, Nomerotski, A, Normand, A, Novak, M, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Orazi, G, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Pain, R, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Podobnik, T, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Reid, D, Reinhardt, R, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sahr, O, Sajot, G, Salt, J, Sannino, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Serbelloni, L, Shellard, Rc, Siegrist, P, Silvestre, R, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Sokolov, A, Solovianov, O, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stampfer, D, Stanescu, C, Stanic, S, Stapnes, S, Stavitski, I, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Tegenfeldt, E, Terranova, F, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Todorova, S, Toet, Dz, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vanlysebetten, A, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Wlodek, T, Yi, J, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zontar, D, Zucchelli, Gc, and Zumerle, G.
Published: 1997

6. Search for stable heavy charged particles in e(+)e(-) collisions at root s=130-136, 161 and 172 GeV

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbi, M Barbiellini, G Bardin, DY Barker, G and Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J Becks, KH and Begalli, M Beilliere, P Belokopytov, Y Belous, K and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bizouard, MA Bloch, D Blume, M Bolognese, T and Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T and Brenner, RA Bricman, C Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Chabaud, V Charpentier, P Chaussard, L and Checchia, P Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Cindro, V Collins, P and Contri, R Cortina, E Cosme, G Cossutti, F Cowell, JH and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C and Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClerq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A and Djama, F Djannati, A Dolbeau, J Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Durand, JD Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Erzen, B Santo, ME Falk, E Fassouliotis, D and Feindt, M Fenyuk, A Ferrer, A Fichet, S Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gokieli, R Golob, B Gopal, G and Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E and Green, C Grefrath, A Gris, P Grosdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H and Klovning, A Kluit, P Kokkinias, P Konopliannikov, A and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Krammer, M Kreuter, C Kronkvist, I and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Libby, J and Liko, D Lindner, R Lipniacka, A Lippi, I Loerstad, B and Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L and MacNaughton, J Maehlum, G Mahon, JR Malmgren, TGM and Malychev, V Mandl, F Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A and MartinezRivero, C Martinezvidal, F Garcia, SMI Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M and McKay, R McNulty, R Medbo, J Merk, M Meroni, C and Meyer, S Meyer, WT Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muenich, K and Mulders, M Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A Novak, M OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Pain, R and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Phillips, HT Piana, G Pierre, F Pimenta, M Podobnik, T and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Reinhardt, R Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Roudeau, O Rovelli, T RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sahr, O and Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC and Siegrist, P Silvestre, R Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, RB Smadja, G Smirnov, N and Smirnova, O Smith, GR Solovianov, O Sosnowski, R and SouzaSantos, D Spassov, T Spiriti, E Sponholz, P and Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S and Stavitski, I Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tcherniaev, E Thomas, J Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L and Transtromer, G Treille, D Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J VanLysebetten, A and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vodopyanov, AS Vrba, V Wahlen, H Walck, C and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Abstract: A search for stable or long-lived heavy charged particles in e(+)e(-) interactions at energies of 130-136, 161 and 172 CeV has been performed using the data taken by the DELPHI experiment at LEP. The search is based on particle identification provided by the Time Projection Chamber and the Ring Imaging Cherenkov detector. Upper limits at 95% confidence level are derived on the cross-section for heavy long-lived pair-produced charge +/-e and +/-2/3e particles in the range of 0.4-2.3 pb for masses from 45 to 84 GeV/c(2). Within supersymmetric extensions of the Standard Model, long-lived charginos with masses from 45 to 84 (80) GeV/c(2) for high (low) sneutrino masses can be excluded at 95% confidence level. Left-handed (right-handed) long-lived or stable smuons and staus with masses between 45 and 68 (65) GeV/c(2) can be excluded at 95% confidence level. (C) 1997 Elsevier Science B.V.
Published: 1997

7. Search for the B-c meson

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Agustinus, A Baillon, P Bambade, P and Barao, F Barbi, M Barbiellini, G Bardin, DY Barker, G and Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J Becks, KH and Begalli, M Beilliere, P Belokopytov, Y Belous, K and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bizouard, MA Bloch, D Blume, M Bolognese, T and Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T and Brenner, RA Bricman, C Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Chabaud, V Charpentier, P Chaussard, L and Checchia, P Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Cindro, V Collins, P and Contri, R Cortina, E Cosme, G Cossutti, F Cowell, JH and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C and Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A and Djama, F Djannati, A Dolbeau, J Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Durand, JD Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Erzen, B Santo, ME Falk, E Fassouliotis, D and Feindt, M Fenyuk, A Ferrer, A Fichet, S Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gokieli, R Golob, B Gopal, G and Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E and Green, C Grefrath, A Gris, P Grosdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P and Herr, H Hessing, TL Heuser, JM Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P Koratzinos, M and Korcyl, K Kostioukhine, V Kourkoumelis, C Kouznetsov, O and Krammer, M Kreuter, C Kronkvist, I Krumstein, Z and Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Mahon, JR Maio, A Malmgren, TGM and Malychev, V Mandl, E Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A and MartinezRivero, C MartinezVidal, F Garcia, SM Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M and McKay, R McNulty, R Medbo, J Merk, M Meroni, C and Meyer, S Meyer, WT Miagkov, A Michelotto, M Migliore, E and Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muenich, K Mulders, M Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A Novak, M OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Pain, R and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Phillips, HT Piana, G Pierre, F Pimenta, M Podobnik, T and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Reinhardt, R Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V and Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A and Sahr, O Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC and Siegrist, P Silvestre, R Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Solovianov, O Sosnowski, R and SouzaSantos, D Spassov, T Spiriti, E Sponholz, P and Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S and Stavitski, I Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Thomas, J Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G and Treille, D Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Uvarov, V VAlenti, G and Vallazza, E VanderVelde, C VanApeldoorn, GW VanDam, P and VanDoninck, WK VanEldik, J VanLysebetten, A Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, E Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L and Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C and Weierstall, M Weihammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Abstract: In a sample of 3.02 million hadronic Z(0) decays collected by the DELPHI detector, 270 J/psi –> e(+)e(-) candidates have been selected. A search for fully reconstructed B-c(+/-) mesons has yielded one B-c(+/-) –> J/psi pi(+/-) candidate, no B-c(+/-) –> J/psi e(+/-) nu(e) candidates, and one B-c(+/-) –> J/psi pi(+)pi(-)pi(+) candidate, consistent with expected background in each channel. The following 90% confidence level upper limits ate determined: Br(Z(0) –> B-c(+/-) X) x Br(B-c(+/-) –> J/psi pi(+)) < (1.05 to 0.84) x 10(-4) and Br(Z(d) –> B-c(+/-) X) x Br(B-c(+/-) –> J/psi e(+/-) nu(e)) < (5.8 to 5.0) x 10(-5), where the ranges quoted correspond to the range of predicted B-c(+/-) lifetimes from 0.4 to 1.4 ps, and Br(Z(0) –> B-c(+/-) X) x Br(B-c(+/-) –> J/psi pi(+)pi(-)pi(+/-)) < 1.75 x 10(-4), constant over the range of predicted B-c(+/-) lifetimes. (C) 1997 Elsevier Science B.V.
Published: 1997

8. Search for excited leptons in e(+)e(-) collisions at root s=161 GeV

Author: Abreu, P, Adam, W, Adye, T, Ajinenko, I, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, Ml, Antilogus, P, Apel, Wd, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Bardin, Dy, Barker, G, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Benvenuti, Ac, Berggren, M, Bertini, D, Bertrand, D, Besancon, M, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bizouard, Ma, Bloch, D, Blume, M, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Cabrera, S, Caccia, M, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Chapkin, M, Carpentier, P, Chaussard, L, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chodoba, J, Chorowicz, V, Cindro, V, Collins, P, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Cowell, Jh, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Defoix, C, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Depaula, L, Desaintjean, C, Dijkstra, H, Diciaccio, L, Didiodato, A, Djama, F, Djannati, A, Dolbeau, J, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Durand, Jd, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Erzen, B, Santo, Me, Falk, E, Fassouliotis, D, Feindt, M, Ferrer, A, Fichet, S, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gerdyukov, L, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Green, C, Grefrath, A, Gris, P, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klapp, O, Klein, H, Klovning, A, Kluit, P, Kokkinias, P, Konopliannikov, A, Koratzinos, M, Korcyl, K, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Lapin, V, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leitner, R, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Libby, J, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Mahon, Jr, Maio, A, Malmgren, Tgm, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, Wt, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Muenich, K, Mulders, M, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nawrocki, K, Negri, P, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Pain, R, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Podobnik, T, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Roudeau, P, Rovelli, T, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sahr, O, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Serbelloni, L, Shellard, Rc, Siegrist, P, Silvestre, R, Simonetti, S, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Sokolov, A, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stampfer, D, Stanescu, C, Stanic, S, Stapnes, S, Stavitski, I, Stevenson, K, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Todorova, S, Toet, Dz, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vanlysebetten, A, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Wlodek, T, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Mi, Zito, M, Zontar, D, Zucchelli, Gc, and Zumerle, G.
Subjects: NEUTRINOS, E+E, HERA, High Energy Physics::Phenomenology, High Energy Physics::Experiment, ELECTRON, LEP, ANNIHILATION, Z0 DECAYS, CROSS-SECTIONS
Abstract: A search with the DELPHI detector at LEP for excited leptons (e*, μ*, τ* and v*) decaying through γ, W or Z transitions is reported. The data used correspond to an integrated luminosity of 10 pb-1 at an e+e- centre-of-mass energy of 161 GeV. The search for pair produced excited leptons established the limits me* > 79.6 GeV/c2, mμ* > 79.6 GeV/c2, mτ* > 79.4 GeV/c2 and mv* > 56.4 GeV/c2 at 95% confidence level, assuming that the SU(2) and U(1) couplings of excited leptons are in the same ratio as for normal leptons and considering both left and right-handed components. Limits corresponding to other assumptions are also given. The search for single excited lepton production established upper limits on the ratio λ/mℓ* of the coupling of the excited lepton to its mass.
Published: 1997

9. A measurement of alpha(s) from the scaling violation in e(+)e(-) annihilation

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbi, M Barbiellini, G Bardin, DY Barker, G and Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J Becks, KH and Begalli, M Beilliere, P Belokopytov, Y Benvenuti, AC and Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P Bizouard, MA Bloch, D Blume, M Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K and Cao, F Carena, F Carroll, L Caso, C Gimenez, MVC and Cattai, A Cavallo, FR Chabaud, V Charpentier, P and Chaussard, L Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M and DaSilva, W Defoix, C Deghorain, A DellaRicca, G and Delpierre, P Demaria, N DeAngelis, A DeBoer, W and DeBrabandere, S DeClercq, C Delavaissiere, C DeLotto, B and DeMin, A DePaula, L DeSaintJean, C Dijkstra, H and DiCiaccio, L DiDiodato, A Djama, F Djannati, A Dolbeau, J Doroba, K Dracos, M Dress, J Drees, KA Dris, M and Durand, JD Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A and Fichet, S Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN and Gele, D Gerber, JP Gerdyukov, L Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Green, C Grefrath, A Gris, P Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z Hallgren, A Hamacher, K and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Heuser, JM Higon, E and Hilke, HJ Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P and Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M and Karvelas, E Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klapp, O Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lefebure, V and Legan, CK Leitner, R Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Libby, J Liko, D Lindner, R Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Mahon, JR and Maio, A Malmgren, TGM Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F Garcia, SM Masik, J Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J and Merk, M Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Muenich, K Mulders, M Mundim, LM and Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL and Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V Olshevski, AG Orava, R Orazi, G and Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P and Pain, R Palka, H Papadopoulou, TD Papageorgiou, K and Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M and Peralta, L Pernegger, H Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Podobnik, T Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sahr, O Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Serbelloni, L Shellard, RC Siegrist, P and Silvestre, R Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S Stavitski, L Stevenson, K and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O and Thomas, J Tilquin, A Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Tristram, G and Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA and Tyndel, M Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E VanApeldoorn, GW and VanDam, P VanEldik, J VanLysebetten, A Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The hadronic fragmentation functions of the various quark flavours and of gluons are measured in a study of the inclusive hadron production from Z(0) decays with the DELPHI detector and are compared with the fragmentation functions measured elsewhere at energies between 14 GeV and 91 GeV. A large scaling violation is observed, which is used to extract the strong coupling constant from a fit using a numerical integration of the second order DGLAP evolution equations. The result is alpha(s)(M-Z) = 0.124(-0.007)(+0.006) (exp) +/- 0.009(theory) where the first error represents the experimental uncertainty and the second error is due to the factorization and renormalization scale dependence. (C) 1997 Elsevier Science B.V.
Published: 1997

10. A precise measurement of the B-d(0) meson lifetime using a new technique

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P Bizouard, MA Bloch, D Blume, M Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M and Rozas, AJC Camporesi, T CAnale, V Canepa, M and Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cindro, V Collins, P Contri, R and Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A Djama, F Djannati, A and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Ferrer, A Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F and Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D and Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M and Gouz, Y Gracco, V Graziani, E Green, C Grefrath, A and Gris, P Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL and Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H Klovning, A Kluit, P and Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Mahon, JR Maio, A Malmgren, TGM Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A MartinezRivero, C and MartinezVidal, F Garcia, SMI Masik, J Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J Merk, M Meroni, C Meyer, S and Meyer, WT Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K and Monge, MR Morettini, P Mueller, H Muenich, K and Mulders, M Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A Novak, M OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Paganini, P Paganoni, M Pages, P Pain, R Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Podobrin, O and Pol, ME Polak, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I and Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siegrist, P Silvestre, R and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tchemiaev, E Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and VanLysebetten, A Vassilopoulos, N Vegni, G Ventura, L and Venus, W Verbeure, F Verlato, M Vertogradov, LS and Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Wlodek, T Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zucchelli, GC Zumerle, G
Abstract: From data recorded by DELPHI between 1991 and 1994, which corresponds to 3.2 million hadronic Z(0) decays, a measurement of the meson lifetime, based on the inclusive reconstruction of 3520 +/- 150 semileptonic decays of the type –> D*+ l , has been performed, The result is: tau(B-d(0)) = 1.532 +/- 0.041(stat.) +/- 0.040(syst.)ps. The contribution to the systematic uncertainty which depends on external errors is +/-0.015.
Published: 1997

11. A study of the reaction e(+)e(-)->mu(+)mu(-)gamma(ISR) at LEP and search for new physics at annihilation energies near 80 GeV

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andersson, P Andreazza, A Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbi, M Barbiellini, G Bardin, DY Barker, G and Baroncelli, A Barring, O Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC Berggren, M and Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M and Bilenky, MS Billoir, P Bizouard, MA Bloch, D Blume, M Bonesini, M Bonivento, W Booth, PSL Borgland, AW and Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Bozovic, I Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Cabrera, S Caccia, M and Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M and Cao, F Carena, F Carroll, L Caso, C Gimenez, MVC and Cattai, A Cavallo, FR Chabaud, V Charpentier, P and Chaussard, L Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W and Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and Dijkstra, K DiCiaccio, L DiDiodato, A Djannati, A and Dolbeau, J Doroba, K Dracos, M Drees, J Drees, KA and Dris, M Durand, JD Edsall, D Ehret, R Eigen, G and Ekelof, T Ekspong, G Elsing, M Engel, JP Erzen, B and Santo, ME Falk, E Fanourakis, G Fassouliotis, D Feindt, M Fenyuk, A Ferrari, P Ferrer, A Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H Fokitis, E and Fontanelli, F Formenti, F Franek, B Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Gandelman, M Garcia, C Garcia, J and Gaspar, D Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gokieli, R Golob, B Goncalves, P and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Green, C Grefrath, A Gris, P Grosdidier, G and Grzelak, K Gumenyuk, S Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Harris, FJ and Hedberg, V Hernandez, JJ Herquet, P Herr, H Hessing, TL and Heuser, JM Higon, E Hilke, HJ Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P Jeanmarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klapp, O Klein, H Kluit, P Knoblauch, D Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Krammer, M Kreuter, C Kronkvist, L and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leisos, A and Leitner, R Lemonne, J Lenzen, G Lepeltier, V Lesiak, T and Libby, J Liko, D Lipniacka, A Lippi, I Loerstad, B and Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L and Maehlum, G Mahon, JR Maio, A Malmgren, TGM Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A MartinezRivero, C and MartinezVidal, F Garcia, SMI Masik, J Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Muenich, K Mulders, M Mundim, LM and Murray, WJ Muryn, B Myatt, G Myklebust, T Naraghi, F and Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Nikolenko, M Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Orazi, G Osterberg, K Ouraou, A Paganini, P Paganoni, M Pain, R Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Phillips, HT Piana, D Pierre, F Pimenta, M Podobnik, T and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Regler, M and Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Reid, D Reinhardt, R Renton, PB Resvanis, LK Richard, F Richardson, J and Ridky, J Rinaudo, G Rohne, O Romero, A Ronchese, P and Roos, L Rosenberg, EI Roudeau, P Rovelli, T and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sannino, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC Siegrist, P Silvestre, R Simonetto, F Sisakian, AN Sitar, B and Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S Stavitski, I Stevenson, K and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O and Tegenfeldt, F Terranova, F Thomas, J Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L and Transtromer, G Treille, D Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J VanLysebetten, A and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Weilhammer, P Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Wlodek, T Yi, J Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zucchelli, GC and Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: A study of the channel e(+)e(-) –> mu(+)mu(-)gamma ISR, where gamma ISR is an initial state radiation photon, is presented using data collected by the DELPHI experiment from 1991 to 1994. The total cross-section at effective annihilation: energies (root s’) below the Z(0) peak is obtained by using the events with relatively hard initial state radiative photon(s) (E gamma > 1 GeV). The differential cross-section as a function of the muon polar production angle is also determined in order eo extract the forward-backward asymmetries for the reaction e(+)e(-) –> mu(+)mu(-) at energies root s’ between 20 and 87 GeV. The ratio of the helicity cross-sections sigma LL+sigma RR/sigma RL+sigma LR, where the two subscripts stand for the helicities of the incoming e(-) and outgoing mu(-) respectively, is extracted from the differential cross-sections in order to test the Standard Model and to look for new physics near 80 GeV. No deviations from the Standard Model were found.
Published: 1997

12. Search for excited leptons in e(+)e(-) collisions at root s=161 GeV

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbi, M Bardin, DY Barker, G and Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ and Battaglia, M Baubillier, M Baudot, J Becks, KH and Begalli, M Beilliere, P Belokopytov, Y Belous, K and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bizouard, MA Bloch, D Blume, M Bolognese, T and Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T and Brenner, RA Bricman, C Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Chabaud, V Chapkin, M Carpentier, P and Chaussard, L Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chodoba, J Chorowicz, V and Cindro, V Collins, P Contri, R Cortina, E Cosme, G and Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M and DaSilva, W Defoix, C Deghorain, A DellaRicca, G and Delpierre, P Demaria, N DeAngelis, A DeBoer, W and DeBrabandere, S DeClercq, C DeLaVaissiere, C DeLotto, B and DeMin, A DePaula, L DeSaintJean, C Dijkstra, H and DiCiaccio, L DiDiodato, A Djama, F Djannati, A Dolbeau, J Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Durand, JD Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Ferrer, A Fichet, S and Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Green, C Grefrath, A Gris, P Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z Hallgren, A Hamacher, K and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Huet, K Hultqvist, K Jackson, JN and Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G and Jarry, P JeanMarie, B Johansson, EK Jonsson, L and Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F and Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H and Klovning, A Kluit, P Kokkinias, P Konopliannikov, A and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Krammer, M Kreuter, C Kronkvist, I and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Lapin, V Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK and Leitner, R Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P and Lyons, L MacNaughton, J Maehlum, G Mahon, JR Maio, A and Malmgren, TGM Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Michelotto, M Migliore, E and Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muenich, K Mulders, M Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Neumann, W and Neumeister, N Nicolaidou, R Nawrocki, K Negri, P and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Pain, R and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Phillips, HT Piana, G Pierre, F Pimenta, M and Podobnik, T Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Roudeau, P Rovelli, T RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sahr, O and Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC and Siegrist, P Silvestre, R Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Sosnowski, R and SouzaSantos, D Spassov, T Spiriti, E Sponholz, P and Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S and Stavitski, I Stevenson, K Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Thomas, J Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G and Treille, D Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J VanLysebetten, A Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, MI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: A search with the DELPHI detector at LEP for excited leptons (e*, mu*, tau* and nu*) decaying through gamma, W or Z transitions is reported. The data used correspond to an integrated luminosity of 10 pb(-1) e(+)e(-) centre-of-mass energy at an e of 161 GeV. The search for pair produced excited leptons established the limits m(e)* > 79.6 GeV/c(2), m(mu)* > 79.6 GeV/c(2), m(tau)* 79.4 GeV/c(2) and m(nu)* > 56.4 GeV/c(2) at 95% confidence level, assuming that the SU(2) and U(I) couplings of excited leptons are in the same ratio as for normal leptons and considering both left and right-handed components. Limits corresponding to other assumptions are also given. The search for single excited lepton production established upper limits on the ratio lambda/m(l)* of the coupling of the excited lepton to its mass.
Published: 1997

13. A Combination of preliminary Electroweak Measurements and Constraints on the Standard Model

Author: Abreu, P., Adam, W., Adye, T., Adzic, P., Alekseev, G D., Alemany, R., Allport, P P., Amaldi, U., Amato, S., Andersson, P., Andreazza, A., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Bardin, D Yu., Barker, G., Baroncelli, A., Barring, O., Bates, M J., Battaglia, M., Baubillier, M., Baudot, J., Becksk, H., Begalli, M., Beilliere, P., Belokopytov, Yu., Benvenuti, a C., Berat, C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenky, M S., Billoir, P., Bizouard, M A., Bloch, D., Blume, M., Bonesini, M., Bonivento, W., Boonekamp, M., Booth, P S L., Borgland, a W., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Bozovic, I., Bozzo, M., Branchini, P., Brand, K D., Brenke, T., Brenner, R A., Brown, R C A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Burgsmuller, T., Buschmann, P., Cabrera, S., Caccia, M., Calvi, M., Camacho Rozas, a J., Camporesi, T., Canale, V., Canepa, M., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Cerruti, C., Chabaud, V., Chalanda, N., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G A., Chen, M., Chierici, R., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Colomer, M., Contri, R., Cosme, G., Cossutti, F., Cowell, J H., Crawley, H B., Crennell, D., Crosetti, G., Czellar, S., d'Almagne, B., Damgaard, G., Dauncey, P D., Davenport, M., da Silva, W., Deghorain, A., Della Ricca, G., Delpierre, P A., Demaria, N., de Angelis, A., de Boer, W., Debrabandere, S., de Clercq, C., de La Vaissiere, C., de Lotto, B., de Min, A., de Paula, L., Dijkstra, H., Di Ciaccio, L., Di Diodato, A., Djannati, A., Dolbeau, J., Doroba, K., Dracos, M., Drees, J., Drees, Ka., Dris, M., Durand, J D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Ellert, M., Elsing, M., Engel, J.P., Erzen, B., Espirito-Santo, M., Falk, E., Fanourakis, G., Fassouliotis, D., Fayot, J., Feindt, M., Ferrari, P., Ferrer, A., Fichet, S., Firestone, A., Fischer, P.A., Flagmeyer, U., Foth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frodesen, a G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, M., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Gerber, J.P., Gerdyukov, L., Gokieli, R., Golob, B., Goncalves, P., Gopal, G., Gorn, L., Gorski, M., Gracco, V., Graziani, E., Green, C., Grefrath, A., Gris, P., Grosdidier, G., Grzelak, K., Gunther, M., Guy, J., Guz, Yu., Hahn, F., Hahn, S., Haider, S., Hajduk, Z., Hallgren, A., Hamacher, K., Harris, F J., Hedberg, V., Heising, S., Henriques, R., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Heuser, J M., Higon, E., Holmgren, S O., Holt, P J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Karafasoulis, K., Katsanevas, S., Katsoufis, E C., Keranen, R., Khomenko, B A., Khovanski, N N., King, B., Kjaer, N J., Klapp, O., Klein, H., Kluit, P., Knoblauch, D., Kokkinias, P., Koratzinos, M., Korcyl, K., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kreuter, C., Kronkvist, I., Krstic, J., Krumstein, Z., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J W., Lanceri, L., Lane, D W., Langefeld, P., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C K., Leisos, A., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Lethuillier, M., Libby, J., Liko, D., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J G., Lopez, J M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Mahon, J R., Maio, A., Malek, A., Malmgren, T Gm., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Markou, A., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Mcpherson, G., Medbo, J., Meroni, C., Meyer, W T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W A., Mjornmark, U., Moa, T., Moller, R., Monig, K., Monge, M R., Moreau, X., Morettini, P., Munich, K., Mulders, M., Mundim, L M., Murray, W J., Muryn, B., Myatt, G., Myklebust, T., Naraghi, F., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neufeld, N., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B S., Nieuwenhuizen, M., Nikolaenko, V., Nikolenko, M., Niss, P., Nomerotski, A., Normand, A., Nygren, A., Oberschulte-Beckmann, W., Olshevski, a G., Onofre, A., Orava, R., Orazi, G., Ortuno, S., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Paiano, S., Pain, R., Paiva, R., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Parzefall, U., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Petridou, C., Petrolini, A., Phillips, H T., Piana, G., Pierre, F., Pimenta, M., Piotto, E., Podobrin, O., Pol, M E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P N., Read, a L., Rebecchi, P., Redaelli, N G., Regler, M., Reid, D., Reinhardt, R., Renton, P B., Resvanis, L K., Richard, F., Rinaudo, G., Rohne, O., Romero, A., Ronchese, P., Rosenberg, E I., Rosinsky, P., Roudeau, P., Rovelli, T., Ruhlmann-Kleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Sampsonidis, D., Sannino, M., Schneider, Henri, Schwickerath, U., Schyns, M a E., Scuri, F., Sedykh, Y., Segar, a M., Seitz, A., Sekulin, R L., Sen'Ko, V A., Shellard, R C., Sheridan, A., Siegrist, P., Silvestre, R., Simonetto, F., Sissakian, a N., Skaali, T B., Smadja, G., Smirnova, O G., Smith, G R., Solovianov, O., Sosnowski, R., Souza-Santos, D., Spassov, Tz., Spiriti, E., Sponholz, P., Squarcia, S., Stampfer, D., Stanescu, C., Stanic, S., Stapnes, S., Stavitski, I., Stevenson, K., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli de Fatis, T., Terranova, F., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L G., Todorov, T., Todorova, S., Toet, D Z., Tomaradze, a G., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M L., Tyapkin, I A., Tyndel, M., Tzamarias, S., Uberschar, B., Ullaland, O., Valenti, G., Vallazza, E., Vander Velde, C., Vanapeldoorn, G W., van Dam, P., van Doninck, W., van Eldik, J., van Lysebetten, A., van Vulpen, I., Vassilopoulos, N., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Verzi, V., Vilanova, D., Vincent, P., Vishnevski, N K., Vitale, L., Vodopyanov, a S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weiser, C., Wetherell, a M., Wicke, D., Wickens, J H., Wilkinson, G R., Williams, W S C., Winter, M., Witek, M., Wlodek, T., Wolf, G., Yi, J., Zach, F., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zucchelli, G C., Zumerle, G., Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published: 1997

14. Measurement of the transverse spin correlation in Z->tau(+)tau(-) decays

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andersson, P Andreazza, A Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbi, M Bardin, DY Barker, G Baroncelli, A and Barring, O Bates, MJ Battaglia, M Baubillier, M Baudot, J Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Belous, K Benvenuti, AC Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bizouard, MA Bloch, D Blume, M Bonesini, M and Bonivento, W Booth, PSL Borgland, AW Borisov, G and Bosio, C Botner, O Boudinov, E Bouquet, B Bourdarios, C and Bowcock, TJV Bozovic, I Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cao, F Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V Charpentier, P Chaussard, L Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Cindro, V Collins, P Contri, R and Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S and Dahm, J Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Deghorain, A DellaRicca, G and Delpierre, P Demaria, N DeAngelis, A DeBoer, W and DeBrabandere, S DeClercq, C DelaVaissiere, C DeLotto, B and DeMin, A DePaula, L Dijkstra, H DiCiaccio, L DiDiodato, A Djannati, A Dolbeau, J Doroba, K Dracos, M Drees, J Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, ME Falk, E Fanourakis, G and Fassouliotis, D Feindt, M Ferrari, P Ferrer, A and Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gokieli, R Golob, B Goncalves, P Gopal, G and Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E and Green, C Grefrath, A Gris, P Grosdidier, G Grzelak, K and Gumenyuk, S Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Heuser, JM Higon, E Hilke, HJ Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and JeanMarie, B Johansson, EK Jonsson, L Jonsson, P and Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klapp, O Klein, H Kluit, P Knoblauch, D Koene, B and Kokkinias, P Konopliannikov, A Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P and Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK Leisos, A Leitner, R Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Mahon, JR Maio, A Malmgren, TGM Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A MartinezRivero, C and MartinezVidal, F Garcia, SMI Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K and Monge, MR Morettini, P Mueller, H Muenich, K and Mulders, M Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Nikolenko, M and Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Orazi, G Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Pain, R Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F and Passeri, A Pegoraro, M Peralta, L Pernegger, H Pernicka, M Perrotta, A Petridou, C Petrolini, A Phillips, HT and Piana, G Pierre, F Pimenta, M Podobnik, T Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Reid, D Reinhardt, R Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sannino, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC Siegrist, P Silvestre, R Simonetto, F Sisakian, AN Sitar, B and Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sokolov, A Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stampfer, D Stanescu, C Stanic, S Stapnes, S Stavitski, I and Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B and Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP and Tchikilev, O Tegenfeldt, E Terranova, F Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Tristram, G and Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA and Tyndel, M Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E VanderVelde, C and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and VanLysebetten, A Vassilopoulos, N Vegni, G Ventura, L and Venus, W Verbeure, F Verlato, M Vertogradov, LS and Vilanova, D Vincent, P Vitale, L Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Waldner, F Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T and Yi, J Yip, K Yushchenko, O Zach, F Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zontar, D Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics
Abstract: The measurement of the correlation between the transverse spin components of tau(+)tau(-) pairs collected during 1992 to 1994 with the DELPHI detector at LEP1 is presented. A value C-TT = 0.87 +/- 0.20 (stat.)(-0.12)(+0.10) (syst.) was obtained for the correlation parameter, in agreement with the Standard Model expectation. (C) 1997 Published by Elsevier Science B.V.
Published: 1997

15. Search for neutralinos, scalar leptons and scalar quarks in e(+)e(-) interactions at root s=130 GeV and 136 GeV

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andersson, P., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J. H., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Didiodato, A., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, M., Graziani, E., Green, C., Grefrath, A., Gris, P., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klapp, O., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Mahon, J. R., Maio, A., T. G. M., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Martinezrivero, C., Martinezvidal, F., Garcia, S. M., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parker, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Silvestre, R., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tcherniaev, E., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weirstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, Gianni
Subjects: PHYSICS, E+E-ANNIHILATION, STANDARD MODEL, MONTE-CARLO, Z0 DECAYS, PARTICLES, SUPERSYMMETRY, DETECTOR, LIMITS, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Using data accumulated by DELPHI during the November 1995 LEP run at 130-136 GeV, searches have been made for events with jets or leptons in conjunction with missing momentum. The results are interpreted in terms of limits on the production of neutralinos, scalar leptons, and scalar quarks.
Published: 1996

16. Determination of vertical bar V-cb vertical bar from the semileptonic decay B-0->D*(-)l(+)nu

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, Ml, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Barbiellini, G, Bardin, Dy, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, Ac, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brillault, L, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, Massimo, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chabaud, V, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cindro, V, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Defoix, C, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, Delotto, B, Demin, A, Depaula, L, Desaintjean, C, Dijkstra, H, Diciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Dufour, Y, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Ershaidat, N, Erzen, B, Santo, Me, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Last, I, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Liken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Maron, T, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, Wt, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizer, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Novak, M, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pemegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszcyzynski, S, Podoborin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Prest, Michela, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahman, H, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Benton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, F, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Solovianov, O, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Toet, Dz, Tomaradze, A, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewska, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zito, M, Zontar, D, Zuberi, R, Zucchelli, Gc, and Zumerle, G.
Subjects: E+E-PHYSICS, LUND MONTE-CARLO, semileptonic decays, V-cb, QUARK EFFECTIVE THEORY, UPDATE, JET FRAGMENTATION, HEAVY, B mesons, DELPHI
Published: 1996

17. Mean lifetime of the B$_{s}^{0}$ meson

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, Ml, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Barbiellini, G, Bardin, Dy, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, Ac, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brillault, L, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chabaud, V, Chapkin, M, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudova, J, Cindro, V, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Cossutti, B, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Defoix, C, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Deangelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Depaula, L, Desaintjean, C, Dijkstra, H, Diciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Ershaidat, N, Erzen, B, Santo, Me, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Lapin, V, Last, I, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Maron, T, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Masik, J, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, Wt, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, Wa, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Novak, M, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Ostankov, A, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Pindo, M, Plaszczynski, S, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Ross, L, Rosenberg, Ei, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Todorova, S, Toet, Dz, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Woschnagg, K, Yip, K, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zito, M, Zontar, D, Zuberi, R, Zucchelli, Gc, and Zumerle, G.
Subjects: PHYSICS, Z(0) DECAYS, E+E, LUND MONTE-CARLO, C+, ASYMMETRY, Bs(0) meson lifetime, particle identification, JET FRAGMENTATION, DELPHI, Particle Physics - Experiment
Abstract: This paper presents an update of the measurement of the mean lifetime of the B^0_s meson. Combining D_s - \ell, D_s-h, \phi - \ell and inclusive D_s final states from the 3.2 million hadronic \Zz decays collected by DELPHI between 1991 and 1994, the B^0_s mean lifetime was measured to be: \tau(B^0_s) = 1.67 ~\pm 0.14, M014AU
Published: 1996

18. Production of Sigma(0) and Omega(-) in Z decays

Author: Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Beloous, K Benvenuti, AC Berggren, M Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Borisov, G Bosio, C Bosworth, S Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Chapkin, M and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, G Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Ershaidat, N Erzen, B Santo, ME Falk, E Fassouliotis, D and Feindt, M Ferrer, A Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, A Gandelman, H Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gerdyukov, L Gibbs, M Gokieli, R Golob, B Gopal, G and Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E and Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P and Gunther, M Guy, J Hahn, F Hahn, S Hallgren, A and Hamacher, K Hao, W Harris, FJ Hedberg, V Henriques, R and Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SM Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I and Romero, A Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J and Sannino, M Schimmelpfennig, M Schneider, H Schwickerath, U and Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y and Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristam, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Reconstructed ii baryon decays and photon conversions in DELPHI are used to measure the Sigma(0) production rate from hadronic Z(0) decays at LEP. The number of Sigma(0) decays per hadronic Z decay is found to be: > = 0.070 +/- 0.010 (stat.) +/- 0.010 (syst.). The Omega(-) production rate is similarly measured to be: = 0.0014 +/- 0.0002 (stat.) +/- 0.0004 (syst.) by a combination of methods using constrained fits to the whole decay chain and particle identification.
Published: 1996

19. Study of radiative leptonic events with hard photons and search for excited charged leptons at root s=130-136 GeV

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertini, D Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Bolognese, T Bonesini, M Bonivento, W Booth, PSL Bosio, C Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brown, RCA Bruckman, P Brunet, JM Bugge, L and Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dehm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, JA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J and Merk, M Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M and Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Prest, M Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I and Romero, A Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sokolov, A Sosnowski, R SouzaSantos, D Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P vanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, M Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR WIlliams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of 5.9 pb(-1) at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events (e, mu, tau) With high energy photons were studied and compared to Standard Model predictions. The data were used to search for charged excited leptons decaying through an electromagnetic transition. No significant signal was found. From the search for pair produced excited leptons, the limits m(e)* > 62.5 GeV/c(2), m(mu)* > 62.6 GeV/c(2) and m(tau)* > 62.2 GeV/c(2) at 95% confidence level were established. For single excited lepton production, upper limits on the ratio lambda/m(l)* of the coupling of the excited charged lepton to its mass were derived.
Published: 1996

20. First measurement of f'(2)(1525) production in Z(0) hadronic decays

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Bosio, C Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Chapkin, M and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chochula, P Chorowicz, V and Chudoba, J Cindro, V Collins, P Contreras, JL and Contri, R Cortina, E Cosme, G Cossutti, F Crawley, HB and Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R and FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N and Nicolaidou, R Neilsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Orava, R and Osterberg, K Ouraou, A Paganini, P Paganoni, M and Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M and Peralta, L Pernegger, H Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J and Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Rybin, A Saarikko, H Sacquin, Y Sadovsky, A and Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A Strub, R and Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tcherniaev, E Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Valenti, G and Vallazza, E VanderVelde, C VanApeldoorn, GW VanDam, P and VanDoninck, WK VanEldik, J Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Weierstall, M and Weilhammer, P Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Woschnagg, K Yip, K Yushchenko, O and Zach, F Zaitsev, A Zalewska, Z Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The inclusive production of the f(2)’(1525) in hadronic Z(0) decays has been studied in data collected by the DELPHI detector at LEP. The Ring Imaging Cherenkov detectors were important tools in the identification of the decay f(2)’(1525) –> K+K-. The average number of f(2)(’)(1525) produced per hadronic Z decay, [f(2)’] = 0.020 +/- 0.005 (stat) +/- 0.006 (syst), and the momentum distribution of the f(2)’(1525) have both been measured. The mass and width of the f(2)’(1525) are found to be [M(f2)’] = 1535 +/- 5 (stat) +/- 4 (syst) MeV/c(2). [Gamma(f2)’] = 60 +/- 20 (stat) +/- 19 (syst) MeV/c(2)
Published: 1996

21. Determination of vertical bar V-cb vertical bar from the semileptonic decay B-0->D*(-)l(+)nu

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD and Brenke, T Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Chapkin, M Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R and FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gibbs, M and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V Lesiak, T and Liko, D Lindner, R Lipniacka, A Lippi, I Loerstad, B and Liken, JG Lopez, JM Loukas, D Lutz, P Lyons, L and Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizer, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pemegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M and Plaszcyzynski, S Podoborin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahman, H Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Benton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V and Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tonazzo, A Tortora, L Transtromer, G and Treille, D Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewska, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Abstract: Semileptonic decays B –> D*(-)l(+)nu X were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant and non-resonant D*(-)pi(+) states was performed and the ratio of the branching fractions: Br(B –> D*(-)l(+)nu X)/Br(B –> D*(-)l(+)nu X) + Br(B-0 –> D*(-)l(+)nu) = 0.19 +/- 0.10(stat) +/- 0.06(syst) was determined. Taking into account this contribution, the differential decay width of B-0 –> D*(-)l(+)nu was measured as a function of the momentum transfer from the B to the D*(-) in two separate analyses, using exclusive and inclusive methods of D*(-) reconstruction. The distributions were fitted over the full momentum transfer range to extract the product of /V-cb/ times the normalization of the decay form factor F(q(max)(2)): F(q(max)(2))/V-cb/ = (35.4 +/- 1.9(stat) +/- 2.4(syst)) . 10(-3). The value of /V-cb/ was computed using theoretical calculations of F(q(max?2), giving: /V-cb/ = (38.9 +/- 2.0(stat) +/- 2.6(syst) +/- 1.7(theory)) . 10(-3). The total branching fraction Br(B-0 –> D*(-)l(-)nu) was determined to be: Br(B-0 –> D*(-)l(+)nu) = (5.52 +/- 0.17(stat) +/- 0.68(syst))%.
Published: 1996

22. An upper limit for Br(Z(0)->ggg) from symmetric 3-jet Z(0) hadronic decays

Author: Abreu, P Adam, W Adye, T Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P Bizouard, MA Bloch, D Blume, M Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M and Rozas, AJC Camporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cindro, V Collins, P Contri, R and Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClerq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A Djama, F Dolbeau, J and Donszelmann, M Doroba, K Dracos, M Drees, J Drees, KA and Dris, M Durand, JD Edsall, D Ehret, R Eigen, G and Ekelof, T Ekspong, G Elsing, M Engel, JP Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M and Gouz, Y Gracco, V Graziani, E Green, C Grefrath, A and Gris, P Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL and Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H Klovning, A Kluit, P and Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Mahon, JR Malmgren, TGM Malychev, V Mandl, F and Marco, J Marco, R Marechal, B Margoni, M Marin, JC and Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Muenich, K Mulders, M Mundim, LM and Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL and Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Pain, R Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sahr, O Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Serbelloni, L Shellard, RC Siegrist, P and Silvestre, R Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnova, O Smith, GR and Sokolov, A Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O and Thomas, J Tilquin, A Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanApeldoorn, GW VanDam, P VanEldik, J VanLysebetten, A and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M Wlodek, T and Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Abstract: An upper limit for BR(Z(0) –> 3g) is obtained from a correlation method, which distinguishes statistically between quark and gluon jets by using the difference in their charged particle multiplicity distributions. From the sample of threefold symmetric three-jet events collected by the DELPHI experiment at LEP during 1991-1994, the 95% confidence level upper limit is deduced to be: BR(Z(0) –> 3g) less than or equal to 1.6 x 10(-2) for the JADE and BR(Z(0) –> 3g) less than or equal to 1.5 x 10(-2) for the DURHAM jet-finder.
Published: 1996

23. Search for pair production of heavy objects in 4-jet events at root s=130-136 GeV

Author: Adam, W Adye, T Agasi, E Ajinenko, I Alekseev, GD and Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S and Andreazza, A Andrieux, ML Antilogus, P Apel, WD Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY and Baroncelli, A Baring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J Becks, KH and Begalli, M Beilliere, P Belokopytov, Y Belous, K and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Chaussard, L Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Cowell, JH Crawley, HB Crennell, D Crosetti, G and Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B and Dam, M Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C DEghorain, A DellaRicca, G Delpierre, P and Demaria, N DeAngelis, A DeBoer, W DeBrabandere, S and DeClercq, C DeLaVaissiere, C DeLotto, B DeMin, A and DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L and DiDiodato, A Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J Drees, KA Dris, M Durand, JD and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Elsing, M Engel, JP Erzen, B Santo, ME Falk, E and Fassouliotis, D Feindt, M Ferrer, A Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H Fokitis, E and Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M and Gouz, Y Gracco, V Graziani, E Green, C Grefrath, A and Gris, P Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johnsson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H Klovning, A Kluit, P and Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Mahon, JR Maio, A Malmgren, TGM Malychev, V and Mandi, F Marco, R Marechal, B Margoni, M Marin, JC and Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R Nulty, RM and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K and Monge, MR Morettini, P Mueller, H Muenich, K Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS Niewenhuizen, M Nikolaenko, V Niss, P Nomerotski, A Normand, A and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Pain, R Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J and Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EJ Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sahr, O and Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Serbelloni, L Shellard, RC and Siccama, I Siegrist, P Silvestro, R Simonetti, S and Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G and Smirnov, N Smirnova, O Smith, GR Sokolov, A and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Weierstall, M Weilhammer, P Weiser, C and Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K and Yip, K Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, ZI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: Results are presented of a search for pair production of heavy objects decaying into four hadronic jets, as expected for example from associated or pair production of MSSM Higgs bosons, hA or H+H-, using a data sample of 5.9 pb(-1) of e(+)e(-) collisions at root s = 130-136 GeV collected with the DELPHI detector at LEP in November 1995. The data and expectations from standard processes agree after four-jet selections. An analysis based on b-tagging finds no hA candidate with high mass. A study optimized to search for H+H- events with mass in the 40-50 GeV/c(2) range also finds no candidate, Finally a comparison is made with a recent ALEPH analysis which found an excess of four-jet events with high multiplicity and high mass. Such a signal is not observed in the DELPHI data, although a slight excess in the mass region around 105 GeV/c(2) is seen.
Published: 1996

24. Search for high mass gamma gamma resonances in e(+)e(-)->l(+)l(-)gamma gamma, nu(nu)over-bar-gamma gamma and q(q)over-bar-gamma gamma at LEP I

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, Gd, Alemany, R, Allport, Pp, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, Ml, Antilogus, P, Apel, Wd, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Bardin, Dy, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Baudot, J, Becks, Kh, Begalli, M, Beilliere, P, Belokopytov, Y, Benvenuti, Ac, Berggren, M, Bertini, D, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, Ms, Billoir, P, Bloch, D, Blume, M, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Branchini, P, Brand, Kd, Brenke, T, Brenner, Ra, Bricman, C, Brown, Rca, Bruckman, P, Brunet, Jm, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Rozas, Ajc, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Chabaud, V, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, Ga, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Chudoba, J, Cindro, V, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, Hb, Crennell, D, Crosetti, G, Maestro, Jc, Czellar, S, Dahljensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, Pd, Davenport, M, Dasilva, W, Defoix, C, Deghorain, A, Dellaricca, G, Delpierre, P, Demaria, N, Angelis, A, Deboer, W, Debrabandere, S, Declercq, C, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Depaula, L, Saintjean, Cd, Dijkstra, H, Diciaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, Ka, Dris, M, Durand, Jd, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, Jp, Erzen, B, Santo, Me, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Fichet, S, Filippas, Ta, Firestone, A, Fischer, Pa, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gele, D, Gerber, Jp, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hallgren, A, Hamacher, K, Hao, W, Harris, Fj, Hedberg, V, Henriques, R, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Higon, E, Hilke, Hj, Hill, Ts, Holmgren, So, Holt, Pj, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, Jn, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Khokhlov, Y, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamsa, Jw, Lanceri, L, Lane, Dw, Langefeld, P, Last, I, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, Ck, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Libby, J, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, Jg, Lopez, Jm, Loukas, D, Lutz, P, Lyons, L, Macnaughton, J, Maehlum, G, Maio, A, Malmgren, Tgm, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, Jc, Mariotti, C, Markou, A, Maron, T, Martinezrivero, C, Martinezvidal, F, Garcia, Smi, Masik, J, Matorras, F, Matteuzii, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Medbo, J, Merck, M, Meroni, C, Meyer, S, Meyer, Wt, Miagkov, A, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, M, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Mundim, Lm, Murray, Wj, Muryn, B, Myatt, G, Naraghi, F, Navarria, Fl, Navas, S, Nawrocki, K, Negri, P, Newmann, W, Neumeister, N, Nicolaidou, R, Nielsen, Bs, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, Novak, M, Oberschultebeckmann, W, Obraztsov, V, Olshevski, Ag, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Pain, R, Palka, H, Papadopoulou, Td, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegorano, M, Peralta, L, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Phillips, Ht, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Ratoff, Pn, Read, Al, Reale, M, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, Ei, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Saarikko, H, Sacquin, Y, Sadovsky, A, Sahr, O, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Seager, P, Sedykh, Y, Segar, Am, Seitz, A, Sekulin, R, Serbelloni, L, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Sitar, B, Skaali, Tb, Smadja, G, Smirnov, N, Smirnova, O, Smith, Gr, Solovianov, O, Sosnowski, R, Souzasantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, L, Stevenson, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, Jp, Tchikilev, O, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, Lg, Todorov, T, Todorova, S, Toet, Dz, Tomaradze, A, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, Ml, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vaneldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, Am, Wicke, D, Wickens, Jh, Wielers, M, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, Ni, Zito, M, Zontar, D, Zucchelli, Gc, and Zumerle, G.
Published: 1996

25. Charged particle multiplicity in e(+)e(-) interactions at root s=130 GeV

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, GD, Alemany, R, Allport, PP, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, ML, Antilogus, P, Apel, WD, Arnoud, Y, Asman, B, Augustin, JE, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Bardin, DY, Baroncelli, A, Barring, O, Barrio, JA, Bartl, W, Bates, MJ, Battaglia, M, Baubillier, M, Baudot, J, Becks, KH, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Benvenuti, AC, Berggren, M, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, MS, Billoir, P, Bloch, D, Blume, M, Blyth, S, Bolognese, T, Bonesini, M, Bonivento, W, Booth, PSL, Borisov, G, Bosio, C, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Bozzo, M, Branchini, P, Brand, KD, Brenke, T, Brenner, RA, Bricman, C, Brillault, L, Brown, RCA, Bruckman, P, Brunet, JM, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Rozas, AJC, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, MVC, Cattai, A, Cavallo, FR, Cerrito, L, Chabaud, V, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, GA, Chen, M, Chierici, R, Chilapnikov, P, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, JL, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crosetti, G, Maestro, JC, Czellar, S, DahlJensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, PD, Davenport, M, DaSilva, W, Defoix, C, Deghorain, A, DellaRicca, G, Delpierre, P, Demaria, N, DeAngelis, A, DeBoer, W, DeBrabandere, S, DeClercq, C, DelaVaissiere, C, DeLotto, B, DeMin, A, DePaula, L, DeSaintJean, C, Dijkstra, H, DiCiaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, KA, Dris, M, Dufour, Y, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, JP, Ershaidat, N, Erzen, B, Santo, ME, Falk, E, Fassouliotis, D, Feindt, M, Fenyuk, A, Ferrer, A, Filippas, TA, Firestone, A, Fisher, PA, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, DC, Frodesen, AG, Fruhwirth, R, FuldaQuenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Gerber, JP, Gerdyukov, L, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, FJ, Hedberg, V, Henriques, R, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Higon, E, Hilke, HJ, Hill, TS, Holmgren, SO, Holt, PJ, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, JeanMarie, B, Johansson, EK, Jonsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, EC, Keranen, R, Khohklov, Y, Khomenko, BA, Khovanski, NN, King, B, Kjaer, NJ, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kourkoumelis, C, Kouznetsov, O, Kramer, PH, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamblot, S, Lamsa, JW, Lanceri, L, Lane, DW, Langefeld, P, Last, I, Laugier, JP, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, CK, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Liko, D, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, JG, Lopez, JM, Loukas, D, Lutz, P, Lyons, L, MacNaughton, J, Maehlum, G, Maio, A, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, JC, Mariotti, C, Markou, A, Maron, T, MartinezRivero, C, MartinezVidal, F, Garcia, SMI, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, McCubbin, M, McKay, R, McNulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, WT, Michelotto, M, Migliore, E, Mirabito, L, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, MR, Morettini, P, Mueller, H, Mundim, LM, Murray, WJ, Muryn, B, Myatt, G, Naraghi, F, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Nielsen, BS, Nieuwenhuizen, M, Nikolaenko, V, Niss, P, Nomerotski, A, Normand, A, OberschulteBeckmann, W, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Palka, H, Papadopoulou, TD, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Podobrin, O, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Reale, M, Rebecchi, P, Redaelli, NG, Regler, M, Reid, D, Renton, PB, Resvanis, LK, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, EI, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, RuhlmannKleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, MAE, Sciolla, G, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Seitz, A, Sekulin, R, Shellard, RC, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, AN, Sitar, B, Skaali, TB, Smadja, G, Smirnov, N, Smirnova, O, Smith, GT, Solovianov, O, Sosnowski, R, SouzaSantos, D, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, JP, Tchikilev, O, Tilquin, A, Timmermans, J, Tkatchev, LG, Todorov, T, Toet, DZ, Tomaradze, A, Tome, B, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, ML, Tyapkin, IA, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, VanderVelde, C, VanEldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, LS, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, AS, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, AM, Wicke, D, Wickens, JH, Wielers, M, Wilkinson, GR, Williams, WSC, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yuschenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zito, M, Zontar, D, Zuberi, R, Zucchelli, GC, and Zumerle, G
Subjects: DELPHI, charged particle multiplicity, High Energy Physics::Experiment, Nuclear Experiment
Abstract: From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be 〈nch〉 = 23.84 ± 0.51 (stat) ± 0.52(syst). When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value αs(130 GeV) = 0.105 ± 0.003(stat) ± 0.008(syst).
Published: 1996

26. Search for the lightest chargino at root s=130 and 136 GeV

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Ajinenko, I, Aleksan, R, Alekseev, GD, Alemany, R, Allport, PP, Almehed, S, Amaldi, U, Amato, S, Andreazza, A, Andrieux, ML, Antilogus, P, Apel, WD, Arnoud, Y, Asman, B, Augustin, JE, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbi, M, Bardin, DY, Baroncelli, A, Barring, O, Barrio, JA, Bartl, W, Bates, MJ, Battaglia, M, Baubillier, M, Baudot, J, Becks, KH, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Benvenuti, AC, Berggren, M, Bertini, D, Bertrand, D, Bianchi, F, Bigi, M, Bilenky, MS, Billoir, P, Bloch, D, Blume, M, Bolognese, T, Bonesini, M, Bonivento, W, Booth, PSL, Bosio, C, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, TJV, Bozzo, M, Branchini, P, Brand, KD, Brenke, T, Brenner, RA, Bricman, C, Brown, RCA, Bruckman, P, Brunet, JM, Bugge, L, Buran, T, Burgsmueller, T, Buschmann, P, Buys, A, Cabrera, S, Caccia, M, Calvi, M, Rozas, AJC, Camporesi, T, Canale, V, Canepa, M, Cankocak, K, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, MVC, Cattai, A, Cavallo, FR, Chabaud, V, Chapkin, M, Charpentier, P, Chaussard, L, Checchia, P, Chelkov, GA, Chen, M, Chierici, R, Chliapnikov, P, Chochula, P, Chorowicz, V, Cindro, V, Collins, P, Contreras, JL, Contri, R, Cortina, E, Cosme, G, Cossutti, F, Crawley, HB, Crennell, D, Crosetti, G, Maestro, JC, Czellar, S, DahlJensen, E, Dahm, J, Dalmagne, B, Dam, M, Damgaard, G, Dauncey, PD, Davenport, M, DaSilva, W, Defoix, C, Deghorain, A, DellaRicca, G, Delpierre, P, Demaria, N, DeAngelis, A, DeBoer, W, DeBrabandere, S, DeClercq, C, DeLaVaissiere, C, DeLotto, B, DeMin, A, DePaula, L, DeSaintJean, C, Dijkstra, H, DiCiaccio, L, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Drees, KA, Dris, M, Durand, JD, Edsall, D, Ehret, R, Eigen, G, Ekelof, T, Ekspong, G, Elsing, M, Engel, JP, Erzen, B, Santo, ME, Falk, E, Fassouliotis, D, Feindt, M, Ferrer, A, Fichet, S, Filippas, TA, Firestone, A, Fischer, PA, Foeth, H, Fokitis, E, Fontanelli, F, Formenti, F, Franek, B, Frenkiel, P, Fries, DC, Frodesen, AG, Fruhwirth, R, FuldaQuenzer, F, Fuster, J, Galloni, A, Gamba, D, Gandelman, M, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, EN, Gele, D, Gerber, JP, Gibbs, M, Gokieli, R, Golob, B, Gopal, G, Gorn, L, Gorski, M, Gouz, Y, Gracco, V, Graziani, E, Grosdidier, G, Grzelak, K, Gumenyuk, S, Gunnarsson, P, Gunther, M, Guy, J, Hahn, F, Hahn, S, Hajduk, Z, Hallgren, A, Hamacher, K, Hao, W, Harris, FJ, Hedberg, V, Henriques, R, Hernandez, JJ, Herquet, P, Herr, H, Hessing, TL, Higon, E, Hilke, HJ, Hill, TS, Holmgren, SO, Holt, PJ, Holthuizen, D, Hoorelbeke, S, Houlden, M, Hrubec, J, Huet, K, Hultqvist, K, Jackson, JN, Jacobsson, R, Jalocha, P, Janik, R, Jarlskog, C, Jarlskog, G, Jarry, P, JeanMarie, B, Johansson, EK, JOnsson, L, Jonsson, P, Joram, C, Juillot, P, Kaiser, M, Kapusta, F, Karafasoulis, K, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, EC, Keranen, R, Khokhlov, Y, Khomenko, BA, Khovanski, NN, King, B, Kjaer, NJ, Klein, H, Klovning, A, Kluit, P, Koene, B, Kokkinias, P, Koratzinos, M, Korcyl, K, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, PH, Krammer, M, Kreuter, C, Kronkvist, I, Krumstein, Z, Krupinski, W, Kubinec, P, Kucewicz, W, Kurvinen, K, Lacasta, C, Laktineh, I, Lamsa, JW, Lanceri, L, Lane, DW, Langefeld, P, Lapin, V, Last, I, Laugier, JP, Lauhakangas, R, Leder, G, Ledroit, F, Lefebure, V, Legan, CK, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Libby, J, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Loken, JG, Lopez, JM, Lukas, D, Lutz, P, Lyons, L, MacNaughton, J, Maehlum, G, Maio, A, Malmgren, TGM, Malychev, V, Mandl, F, Marco, J, Marco, R, Marechal, B, Margoni, M, Marin, JC, Mariotti, C, Markou, A, Maron, T, MartinezRivero, C, MartinezVidal, F, Garcia, SMI, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, McCubbin, M, McKay, R, McNulty, R, Medbo, J, Merk, M, Meroni, C, Meyer, S, Meyer, WT, Michelotto, M, Migliore, E, Mirabito, L, Mitaroff, WA, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, MR, Morettini, P, Mueller, H, Mundim, LM, Murray, WJ, Muryn, B, Myatt, G, Naraghi, F, Navarria, FL, Navas, S, Nawrocki, K, Negri, P, Nemecek, S, Neumann, W, Neumeister, N, Nicolaidou, R, Normand, A, Novak, M, OberschulteBeckmann, W, Obraztsov, V, Olshevski, AG, Onofre, A, Orava, R, Osterberg, K, Ouraou, A, Paganini, P, Paganoni, M, Pages, P, Pain, R, Palka, H, Papadopoulou, TD, Papageorgiou, K, Pape, L, Parkes, C, Parodi, F, Passeri, A, Pegoraro, M, Peralta, L, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovyck, M, Phillips, HT, Piana, G, Pierre, F, Pimenta, M, Plaszczynski, S, Podobrin, O, Pol, ME, Polok, G, Poropat, P, Pozdniakov, V, Prest, M, Privitera, P, Pukhaeva, N, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Rames, J, Ratoff, PN, Read, AL, Reale, M, Rebecchi, P, Redaelli, NG, Regler, M, Reid, D, Renton, PB, Resvanis, LK, Richard, F, Richardson, J, Ridky, J, Rinaudo, G, Ripp, I, Romero, A, Roncagliolo, I, Ronchese, P, Roos, L, Rosenberg, EI, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, RuhlmannKleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sadovsky, A, Sahr, O, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schimmelpfennig, M, Schneider, H, Schwickerath, U, Schyns, MAE, Sciolla, G, Scuri, F, Seager, P, Sedykh, Y, Segar, AM, Seitz, A, Sekulin, R, Serbelloni, L, Shellard, RC, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, AN, Sitar, B, Skaali, TB, Smadja, G, Smirnov, N, Smirnova, O, Smith, GR, Sosnowski, R, SouzaSantos, D, Spassov, T, Spiriti, E, Sponholz, P, Squarcia, S, Stanescu, C, Stapnes, S, Stavitski, I, Stevenson, K, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Tabarelli, T, Tavernet, JP, Tcherniaev, E, Tchikilev, O, Thomas, J, Tilquin, A, Timmermans, J, Tkatchev, LG, Todorov, T, Todorova, S, Toet, DZ, Tomaradze, A, Tonazzo, A, Tortora, L, Transtromer, G, Treille, D, Trischuk, W, Tristram, G, Trombini, A, Troncon, C, Tsirou, A, Turluer, ML, Tyapkin, IA, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, VanderVelde, C, VanApeldoorn, GW, VanDam, P, VanEldik, J, Vassilopoulos, N, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, LS, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, AS, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Weierstall, M, Weilhammer, P, Weiser, C, Wetherell, AM, Wicke, D, Wickens, JH, Wielers, M, Wilkinson, GR, Williams, WSC, Winter, M, Witek, M, Woschnagg, K, Yip, K, Yushchenko, O, Zach, F, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zimin, NI, Zito, M, Zontar, D, Zucchelli, GC, and Zumerle, G
Subjects: PHYSICS, DELPHI, lightest chargino, minimal Supersymmetric Standard model, LEP-200, High Energy Physics::Phenomenology, STANDARD MODEL, SUPERSYMMETRY, High Energy Physics::Experiment
Abstract: A search for pair production of the lightest chargino at √s = 130.4 and 136.3 GeV has been carried out using the data sample corresponding to the 5.92 pb-1 recorded by the DELPHI detector during the high energy run of LEP in the last period of 1995. The theoretical reference model has been the Minimal Supersymmetric Standard Model with R-parity conservation. The three topologies expected for the decay of a pair of charginos, namely two acoplanar leptons plus missing energy (ℓℓ), two jets and an isolated lepton plus missing energy (jjℓ) and missing energy in a hadronic environment (√s), were investigated. No evidence of a signal was found. Lower mass limits were derived for various scenarios, including the case of a low mass difference between the chargino and the neutralino and of a light sneutrino. The mass limits range between 56.3 GeV/c2 and the kinematic limit.
Published: 1996

27. Measurement of inclusive K(0)(892), phi(1020) and K-2(0)(1430) production in hadronic Z decays

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Belous, K Benvenuti, AC Berggren, M Bertini, D Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T and Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M and Rozas, AJC Camporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V Chapkin, M and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F Crawley, HB and Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVassiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Durand, JD Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Ferrer, A Fichet, S and Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerberg, JP Gerdyukov, L Gibbs, M and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E Gresdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, G and Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F and Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Kramer, PH and Krammer, M Kreuter, C Kronkvist, I Krumstein, Z and Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Libby, J Liko, D Lindner, R Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D and Lutz, P Lyons, L Maehlum, G Maio, A Malmgren, TGM and Malychev, V Mandl, F Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garvia, SMI Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M and McKay, R McNulty, R Medbo, J Merk, M Meroni, C and Meyer, S Meyer, WT Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muenich, K and Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F and Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Niewenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A Novak, M OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Paganini, P Paganoni, M Pages, P Pain, R Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Plaszczynski, S Podobrin, O Pol, ME Polok, G and Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I and Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simenetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanApeldoorn, GW VanDam, P VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zucchelli, GC Zumerle, G
Abstract: The inclusive production of the neutral vector mesons K-*0(892) and phi(1020), and of the tensor meson K-2(*0)(1430), in hadronic decays of the Z has been mea sured by the DELPHI detector at LEP. The average production rates per hadronic Z decay have been determined to be 0.77 +/- 0.08 K-2(*0)(892), 0.104 +/- 0.008 phi(1020) and 0.079 +/- 0.040 K-2(*0)(1430). The ratio of the tensor-to-vector meson production yields, [K-2(*0)(1430)]/[K-*0(892)] = 0.10 +/- 0.05, is smaller than the [f(2)(1270)]/[rho(0)(770)] and [f’(2)(1525)]/[phi(1020)] ratios measured by DELPHI. The production rates and differential cross sections are compared with the predictions of JETSET 7.4 tuned to the DELPHI data and of HERWIG 5.8. The K-*0(892) and phi(1020) data are compatible with model predictions, but a large disagreement is observed for the K-2(*0)(1430).
Published: 1996

28. Search for anomalous production of single photons at root s=130 and 136 GeV

Author: Adam, W Adye, T Agasi, E Ajinenko, L Aleksan, R and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Barbiellini, G Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Belous, K Benvenuti, AC Berggren, M and Bertini, D Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Bolognese, T Bonesini, M Bonivento, W Booth, PSL Bosio, C Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brown, RCA Bruckman, P Brunet, JM Bugge, L and Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Libby, J and Liko, D Lindner, R Lipniacka, A Lippi, I Loerstad, B and Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L and MacNaughton, J Maehlum, G Maio, A Malychev, V Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J and Merk, M Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG Onofre, A and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M and Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Prest, M Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK and Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I and Romero, A Roncagliolo, I Ronchese, P Roos, L Rosenberg, EL Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Weierstall, M Weilhammer, P Weiser, C and Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K and Yip, K Yushchenko, O Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: This letter reports the results of the measurement of single photon production in the reaction e(+)e(-) –> gamma+ invisible particles at centre-of-mass energies root s = 130 and 136 GeV and an integrated luminosity of 5.83 pb(-1), collected with the DELPHI detector at LEP. The signal is compatible with the prediction of the Standard Model for the process e(+)e(-) –> nugamma, and the number of neutrino families has been determined to be N-nu = 3.1 +/- 0.6. Limits have been derived on anomalous neutral gauge boson couplings and on compositeness in the framework of a specific model.
Published: 1996

29. Search for high mass gamma gamma resonances in e(+)e(-)->l(+)l(-)gamma gamma, nu(nu)over-bar-gamma gamma and q(q)over-bar-gamma gamma at LEP I

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Angelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Saintjean, C. D., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., T. G. M., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., S. M. I., Masik, J., Matorras, F., Matteuzii, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merck, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, M., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Newmann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegorano, M., Peralta, L., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Solovianov, O., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, L., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, Gianni
Subjects: EVENTS, L+L, MONTE-CARLO, DELPHI, photon pairs, fragmentation, branching ratio, DISTRIBUTIONS, PHOTON PAIRS, FRAGMENTATION, DECAYS, Z(0)
Published: 1996

30. A precise measurement of the tau lepton lifetime

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Bardin, DY Barker, GJ Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Blyth, S Bocci, V Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C Bosworth, S and Botner, O Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carrilho, P Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Charpentier, P and Chaussard, L Chauveau, J Checchia, P Chelkov, GA and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoeck, H DeBeer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falk, E and Fassouliotis, D Feindt, M Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P and Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M and Karvelas, E Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Krolikowski, J Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Lokajicek, M and Loken, JG Lopez, JM LopezFernandez, A LopezAguera, MA and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Mandl, F Maocun, C Marco, J and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A and Maron, T MartinezRivero, C MartinezVidal, F Garcia, SMI and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Meroni, C and Meyer, S Meyer, WT Miagkov, A Michelotto, M Migliore, E and Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F and Navarria, FL Navas, S Negri, P Nemecek, S Neumann, W and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R and Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Saarikko, H and Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J and Sannino, M Schimmelpfennig, M Schneider, H Schwickerath, U and Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y and Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Waldner, F Weierstall, M and Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M and Witek, M Woschnagg, K Yip, K Yushchenko, O Zach, F and Zacharatou, C Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R and Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Two measurements of one-prong decays are combined, accounting for correlations, giving a result of tau(tau) = 291.8 +/- 3.3 (stat.) +/- 2.0(sys.) fs while the decay length distribution of three-prong decays gives the result tau(tau) = 286.7 +/- 4.9 (stat.) +/- 3.3 (sys.) fs. Combining the results presented here with previous DELPHI measurements, we get tau(tau) = 291.4 +/- 3.0 fs and find that the ratio of the coupling constant for tau decay relative to that for muon decay is 0.990 +/- 0.009, compatible with lepton universality.
Published: 1996

31. Determination of the modulus of $\mid V_{cb} \mid$ from the semileptonic decay B$^{0} \rightarrow$ D$*^{-}$l$^{+}\nu$

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G D., Alemany, R., Allport, P P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M.L., Antilogus, P., Apel, W D., Arnoud, Y., Asman, B., Augustin, J.-E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, Guido, Bardin, D Yu., Baroncelli, A., Barring, O., Barrio, J A., Bartl, W., Bates, M J., Battaglia, M., Baubillier, M., Becks, K H., Begalli, M., Beilliere, P., Belokopytov, Yu., Benvenuti, A C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P S L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T J V., Bozzo, M., Branchini, P., Brand, K D., Brenke, T., Brenner, R A., Bricman, C., Brillault, L., Brown, R C A., Bruckman, P., Brunet, J M., Bugge, L., Buran, T., Burgsmuller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., Camacho Rozas, A J., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., Castillo-Gimenez, M V., Cattai, A., Cavallo, F R., Cerrito, L., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G A., Chen, M., Chierici, R., Chliapnikov, P V., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H B., Crennell, D., Crosetti, G., Cuevas-Maestro, J., Czellar, S., Dahl-Jensen, E., Dahm, J., D'Almagne, B., Dam, M., Damgaard, G., Dauncey, P D., Davenport, M., Da Silva, W., Defoix, C., Deghorain, A., Della Ricca, G., Delpierre, P A., Demaria, N., De Angelis, A., De Boer, W., DeBrabandere, S., De Clercq, C., De La Vaissiere, C., De Lotto, B., De Min, A., De Paula, L., De Saint-Jean, C., Dijkstra, H., Di Ciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, KA., Dris, M., Dufour, Y., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J.P., Erzen, B., Espirito-Santo, M., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T A., Firestone, A., Fischer, P.A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D C., Frodesen, A G., Fruhwirth, R., Fulda-Quenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E N., Gele, D., Gerber, J.P., Gibbs, M., Gokieli, R., Gopal, G., Gorn, L., Gorski, M., Gouz, Yu., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, SA., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F J., Hedberg, V., Henriques, R., Hernandez, J J., Herquet, P., Herr, H., Hessing, T L., Higon, E., Hilke, H J., Hill, T S., Holmgren, S O., Holt, P J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jean-Marie, B., Johansson, E K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karvelas, E., Katsanevas, S., Katsoufis, E C., Keranen, R., Khokhlov, Yu., Khomenko, B A., Khovanski, N N., King, B., Kjaer, N J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kourkoumelis, C., Kouznetsov, O., Kramer, P H., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J W., Lanceri, L., Lane, D W., Langefeld, P., Last, I., Laugier, J P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Lorstad, B., Loken, J G., Lopez, J M., Loukas, D., Lutz, P., Lyons, L., Maehlum, G., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J C., Mariotti, C., Maron, T., Martinez-Rivero, C., Martinez-Vidal, F., Marti, I Garcia S., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., McCubbin, M., McKay, R., McNulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, W T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W A., Mjornmark, U., Moa, T., Moller, R., Monig, K., Monge, M R., Morettini, P., Muller, H., Mundim, L M., Murray, W J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschulte-Beckmann, W., Obraztsov, V., Olshevski, A G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrovyck, M., Phillips, H T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, Stéphane, Podobrin, O., PolM, E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P N., Read, A L., Reale, M., Rebecchi, P., Redaelli, N G., Regler, M., Reid, D., Renton, P B., Resvanis, L K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann-Kleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, Henri, Schwickerath, U., Schyns, M A E., Sciolla, G., Scuri, F., Seager, P., Segar, A M., Seitz, A., Sekulin, R., Shellard, R C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., SisakianA, N., Sitar, B., Skaali, T B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G R., Solovianov, O., Sosnowski, R., Souza-Santos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J P., Tchikilev, O., Tilquin, A., Timmermans, J., Tkatchev, L G., Todorov, T., Toet, D Z., Tomaradze, A., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M L., Tyapkin, I A., Tyndel, M., Tzamarias, S., Uberschar, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vander Velde, C., Van Apeldoorn, G W., Van Dam, P., Van Doninck, W K., Van Eldik, J., Vassilopoulos, N., Vegni, G., Ventura, Laurent, Venus, W., Verbeure, F., Verlato, M., Vertogradov, L S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weiser, C., Wetherell, A M., Wicke, D., Wickens, J H., Wielers, M., Wilkinson, G R., Williams, W S C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G C., Zumerle, G., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Subjects: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract: Semileptonic decays B \rightarrow D^{*-} \ell^+ \nu X were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant %(D^{**}) and non-resonant D^{*-} \pi^{+} states was performed and the ratio of the branching fractions: \frac {Br ({\mathrm{B} \rightarrow {\mathrm D}^{*-}} \ell^+ \nu X)} {Br({\mathrm{B} \rightarrow {\mathrm D}^{*-}} \ell^+ \nu X) + Br( {\mathrm{B}^0 \rightarrow \mathrm{D}^{*-}} \ell^+ \nu)} = 0.19 \pm 0.10({\mathrm{stat}}) \pm 0.06({\mathrm{syst}}) was determined. Taking into account this contribution, %DB the differential production fraction of the decay the differential decay width of {\mathrm{B}^{0} \rightarrow \mathrm{D}^{*-}} \ell^+ \nu was measured as a function of the momentum transfer from the B to the D^{*-} in two separate analyses, using exclusive and inclusive methods of D^{*-} reconstruction. The distributions were fitted %DB with a linear function over the full momentum transfer range to extract the product of \mathrm{|V_{cb}|} times the normalization of the decay form factor F(q^2_{max}): F(q^2_{max})\mathrm{|V_{cb}|} = (35.0 \pm 1.9({\mathrm{stat}}) \pm 2.3({\mathrm{syst}}) )~\cdot~10^{-3}. The value of \mathrm|V_{cb}| was computed using theoretical calculations of F(q^2_{max}), giving: {\mathrm{|V_{cb}|}} = (38.5 \pm 2.1({\mathrm{stat}}) \pm 2.5({\mathrm{syst}}) \pm 1.7({\mathrm{theory}}))~\cdot~10^{-3}. The total branching fraction Br(\mathrm{B}^{0} \rightarrow D^{*-} \ell^+ \nu) was determined to be: Br ({\mathrm{B}^0 \rightarrow \mathrm{D}^{*-}} \ell^+ \nu) = (5.47 \pm 0.16({\mathrm{stat}}) \pm 0.67({\mathrm{syst}})) \%.
Published: 1996
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32. Charged particle multiplicity in e(+)e(-) interactions at root s=130 GeV

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Belous, K Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD and Brenke, T Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA Chen, M Chierici, R Chilapnikov, P Chochula, P Chorowicz, V Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Ershaidat, N Erzen, B Santo, ME Falk, E Fassouliotis, D and Feindt, M Fenyuk, A Ferrer, A Filippas, TA and Firestone, A Fisher, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khohklov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Lokajicek, M and Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L and MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F and Marco, J Marco, R Marechal, B Margoni, M Marin, JC and Mariotti, C Markou, A Maron, T MartinezRivero, C and MartinezVidal, F Garcia, SMI Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG and Regler, M Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J and Sannino, M Schimmelpfennig, M Schneider, H Schwickerath, U and Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y and Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GT Solovianov, O Sosnowski, R SouzaSantos, D and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Uvarov, V Valenti, G and Vallazza, E VanderVelde, C VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yuschenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: From the data collected by DELPHI at LEP in autumn 1995, the multiplicity of charged particles at a hadronic energy of 130 GeV has been measured to be [n(ch)] = 23.84 +/- 0.51(stat) +/- 0.52(syst), When compared to lower energy data, the value measured is consistent with the evolution predicted by QCD with corrections at next-to-leading order, for a value alpha(s) (130 GeV) = 0.105 +/- 0.003(stat) +/- 0.008(syst).
Published: 1996

33. Search for exclusive decays of the Lambda(b) baryon and measurement of its mass

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, A Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Borisov, G Bosio, C Bosworth, S Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Chapkin, M and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Ershaidat, N Erzen, B Santo, ME Falk, E Fassouliotis, D and Feindt, M Fenyuk, A Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gibbs, M Gokieli, R Golob, B Gopal, G and Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E and Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P and Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Kramer, PH Kreuter, C Kronkvist, I and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V and Legan, CK Leitner, R Lemoigne, Y Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Malychev, V Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Michelotto, M Migliore, E and Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F and Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A Normand, A and Novak, M OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M and Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Prest, M Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V and Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A search for fully reconstructed Lambda(b)(0) beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. A total of four events has been found, three in the Lambda(c)(+)pi(-) channel and one in the Lambda(c)(+)a(1)(-) channel over a small background. The Lambda(b)(0) beauty baryon mass is measured to be (5668 +/- 16 (stat.) +/-8 (syst.)) MeV/c(2).
Published: 1996

34. Study of radiative leptonic events with hard photons and search for excited charged leptons at root s=130-136 GeV

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, G., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dehm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, J. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., S. M. I., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, Gianni
Subjects: E+E, eelctromagnetic transition, DELPHI, radiative leptonic event, ELECTRON, DECAYS, HERA, LEP, G-2
Published: 1996

35. Determination of the average lifetime of b-baryons

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Belous, K Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD and Brenke, T Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Chapkin, M Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Falk, E Fassouliotis, D Feindt, M Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E and Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P and JeanMarie, B Johansson, EK Jonsson, L Jonsson, P and Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Perrotta, A Petridou, C Petrolini, A Petrovyck, M and Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M and Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P and Pozdniakov, V Prest, M Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V and Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The average lifetime of b-baryons has been studied using 3 × 106 hadronic Z0 decays collected by the DEL-PHI detector at LEP. Three methods have been used, based on the measurement of different observables: the proper decay time distribution of 206 vertices reconstructed with a Λ, a lepton and an oppositely charged pion; the impact parameter distribution of 441 muons with high transverse momentum accompanied by a Λ in the same jet; and the proper decay time distribution of 125 Λc-lepton decay vertices with the Λc exclusively reconstructed through its pKπ, pK0 and Λ3π decay modes. The combined result is: τ(b-baryon) = (1.254-0.109+0.121(stat) ±0.04(syst)-0.05+0.03(syst)) ps where the first systematic error is due to experimental uncertainties and the second to the uncertainties in the modelling of the b-baryon production and semi-leptonic decay. Including the measurement recently published by DELPHI based on a sample of proton-muon vertices, the average b-baryon lifetime is : τ(b-baryon) = (1.255-0.102+0.115(stat) ±0.05) ps. © Springer-Verlag 1996.
Published: 1996

36. Search for pair production of heavy objects in 4-jet events at sqrt {s}$=130-136 GeV

Author: Adam, W., Adye, T., Agasi, E., Ajinenko, I., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, G., Bardin, D. Y., Baroncelli, A., Baring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Besancon, M., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Borisov, G., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Cowell, J. H., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Didiodato, A., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Green, C., Grefrath, A., Gris, P., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johnsson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klapp, O., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Mahon, J. R., Maio, A., T. G. M., Malychev, V., Mandi, F., Marco, R., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Martinezrivero, C., Martinezvidal, F., S. M. I., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Nulty, R. M., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Muenich, K., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Niewenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Pain, R., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. J., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Silvestro, R., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, Z. I., Zito, M., Zontar, D., Zucchelli, G. C., Zumerle, Gianni, LEP (IHEF, IoP, FNWI), BARBIELLINI AMIDEI, Guido, Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, Vitale, Lorenzo, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Aleph, Physics and Astronomy (miscellaneous), ENERGIES, Electron–positron annihilation, Hadron, HIGGS BOSONS, Jet (particle physics), Partícules (Física nuclear), DECAYS, Nuclear physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Detectors de radiació, Boson, DELPHI, Physics, High Energy Physics::Phenomenology, Supersymmetry, LARGE ELECTRON POSITRON COLLIDER, Pair production, PARTICLE PHYSICS, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Results are presented of a search for pair production of heavy objects decaying into four hadronic jets, as expected for example from associated or pair production of MSSM Higgs bosons, hA or H$^+$H$^-$, using a data sample of $5.9\,$pb$^{-1}$ of $e^+ e^-$ collisions at $\sqrt{s}=130$-$136\,{\mathrm {GeV}}$ collected with the DELPHI detector at LEP in November 1995. The data and expectations from standard processes agree after four-jet selections. An analysis based on $b$-tagging finds no hA candidate with high mass. A study optimized to search for H$^+$H$^-$ events with mass in the 40-50$\,{\mathrm{GeV}}/c^2$ range also finds no candidate. Finally a comparison is made with a recent ALEPH analysis which found an excess of four-jet events with high multiplicity and high mass. Such a signal is not observed in the DELPHI data, although a slight excess in the mass region around $105\,{\mathrm{GeV}}/c^2$ is seen.
Published: 1996
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37. Performance of the DELPHI detector

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A and Andrieux, ML Antilogus, P Apel, WD Arnoud, Y Asman, B and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barate, R Barbiellini, G Bardin, DY Baroncelli, A Barring, O Barrio, JA Bartl, W Bates, MJ and Battaglia, M Baubillier, M Baudot, J Becks, KH Begalli, M Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W Booth, PSL Bosio, C Bosworth, S and Botner, O Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T Puschmann, P and Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carrilho, P Carroll, L Caso, C Gimenez, MVC and Cattai, A Cavallo, FR Cerrito, L Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falaleev, V and Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y and Gracco, V Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P and Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS and Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S and Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN and Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Karyukhin, A and Katsanevas, S Katsoufis, EC Keranen, R Khomenko, BA and Khovanski, NN King, B Kjaer, NK Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Loken, JG Lopez, JM Aguera, MAL Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A and Malychev, V Mandl, F Marco, J Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Marson, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and MCCubbin, M McKay, R McNulty, R Medbo, J Meroni, C and Meyer, S Meyer, WT Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Mundim, LM and Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL and Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R and Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parkes, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Perevozchikov, V Pernegger, H Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G and Pierre, F Pimenta, M Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnov, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, M Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Zach, F Zaitsev, A Zalewska, A and Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract: DELPHI (DEtector with Lepton, Photon and Hadron Identification) is a detector for e(+)e(-) physics, designed to provide high granularity over a 4 pi solid angle, allowing an effective particle identification, It has been operating at the LEP (Large Electron-Positron) collider at CERN since 1989. This article reviews its performance.
Published: 1996

38. Search for exclusive decays of the Lambda_b baryon and measurement of its mass

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, A., Bambade, P., Barao, F., Barate, R., Barbi, M., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bolognese, T., Bonesini, M., Bonivento, W., Booth, P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., Bowcock, T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., Brillault, L., Brown, R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., Rozas, A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., Gimenez, M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Chapkin, M., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Chudoba, J., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Malychev, V., Mandl, F., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M. I., Masik, J., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., Schyns, M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Solovianov, O., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Erik Silvio Vallazza, Vandervelde, C., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., Williams, W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., Zumerle, G., LEP (IHEF, IoP, FNWI), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Nuclear and High Energy Physics, Particle physics, Hadron, Combined use, Lambda, Tracking (particle physics), 01 natural sciences, Partícules (Física nuclear), Nuclear physics, beauty baryon, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, Detectors de radiació, DELPHI, Physics, 010308 nuclear & particles physics, Detector, LARGE ELECTRON POSITRON COLLIDER, Baryon, particle identification, PARTICLE PHYSICS, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A search for fully reconstructed \lb beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. A total of four events has been found, three in the \lc\ppm channel and one in the \lc\a1m channel over a small background. The \lb beauty baryon mass is measured to be (~ 5668 \pm 16~ ({\rm stat.}) \pm 8~({\rm syst.})~)~ \mv.
Published: 1996
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39. Measurement of inclusive pi(0) production in hadronic Z(0) decays

Author: Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R and Barbiellini, G Bardin, DY Barker, GJ Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Blyth, S Bocci, V and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brillault, L and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Caccia, M Calvi, M and Rozas, AJC Camporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carrilho, P Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C and Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoeck, H DeBoer, W DeBrabandere, S and DeClercq, C DeLaVaissiere, C DeLotto, B DeMin, A and DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L and Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Dufour, Y Dupont, F and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Elsing, M Engel, JP Ershaidat, N Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Ferrer, A Filippas, TA and Firestone, A Fischer, PA Foeth, H Fokitis, E and Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerber, JP Gerdyukov, L Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Halgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R and Jalocha, P Janik, R Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Krolikowski, J Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW and Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R and Leder, G Ledroit, F Lefebure, V Legan, CK Leitner, R and Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Lokajicek, M Loken, JG Lopez, JM and LopezFernandez, A Aguera, MAL Loukas, D Lutz, P Lyons, L and MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Maocun, C Marco, J Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C and MartinezVidal, F Garcia, SMI Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Meroni, C Meyer, S Meyer, WT Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Negri, P Nemecek, S and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Radojicic, D and Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL and Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D and Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P and Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, A Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weierstall, M Weilhammer, P and Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zacharatour, C and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zuberi, R and Zucchelli, GC Zumerle, G
Abstract: An analysis is presented of inclusive pi(0) production in Z(0) decays measured with the DELPHI detector, At low energies, pi(0) decays are reconstructed by using pairs of converted photons and combinations of converted photons and photons reconstructed in the: barrel electromagnetic calorimeter (HPC). At high energies (up to x(p) = 2 . p(pi)/root s = 0.75) the excellent granularity of the HPC is exploited to search for two-photon substructures in single showers, The inclusive differential cross section is measured as a function of energy for q (q) over bar and b (b) over bar events, The number of pi(0)’s per hadronic Z(0) event is N(pi(0))/Z(had)(0) = 9.2 +/- 0.2(stat) +/- 1.0(syst) and for b (b) over bar events the number of pi(0),s is N(pi(0))/b (b) over bar = 10.1 +/- 0.4(stat) +/- 1.1(syst). The ratio of the number of pi(0)’s in b (b) over bar events to hadronic Z(0) events is less affected by the systematic errors and is found to be 1.09 +/- 0.05 +/- 0.01. The measured pi(0) cross sections are compared with the predictions of different parton shower models. For hadronic events, the peak position in the xi(p) = ln(l/X(p)) distribution is xi(p)* = 3.90(-0.14)(+0.24). The average number of pi(0)’s from the decay of primary B hadrons is found to be N(B –> pi(0) X)/B hadron = 2.78 +/- 0.15(stat) +/- 13.60(syst).
Published: 1996

40. Search for anomalous production of single photons at root s=130 and 136 GeV

Author: Adam, W., Adye, T., Agasi, E., Ajinenko, L., Aleksan, R., Alekseev, G. D., Alemany, R., Allport, P. P., Almehed, S., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbi, M., Barbiellini, G., Bardin, D. Y., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertini, D., Bertrand, D., Bianchi, Fabrizio, Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Bosio, C., Botner, O., Boudinov, E., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenke, T., Brenner, R. A., Bricman, C., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Burgsmueller, T., Buschmann, P., Buys, A., Cabrera, S., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chen, M., Chierici, R., Chliapnikov, P., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Dauncey, P. D., Davenport, M., Dasilva, W., Defoix, C., Deghorain, A., Dellaricca, G., Delpierre, P., Demaria, N., Deangelis, A., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Durand, J. D., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Fichet, S., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Grzelak, K., Gumenyuk, S., Gunnarsson, P., Gunther, M., Guy, J., Hahn, F., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Hoorelbeke, S., Houlden, M., Hrubec, J., Huet, K., Hultqvist, K., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, C., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kapusta, F., Karafasoulis, K., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khokhlov, Y., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koene, B., Kokkinias, P., Koratzinos, M., Korcyl, K., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Libby, J., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Loken, J. G., Lopez, J. M., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Marco, J., Marco, R., Marechal, B., Margoni, M., Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., S. M. I., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Merk, M., Meroni, C., Meyer, S., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, Ernesto, Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Nawrocki, K., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Novak, M., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Papageorgiou, K., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovyck, M., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Pindo, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, Alessandra, Roncagliolo, I., Ronchese, P., Roos, L., Rosenberg, E. L., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sadovsky, A., Sahr, O., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schimmelpfennig, M., Schneider, H., Schwickerath, U., M. A. E., Sciolla, G., Scuri, F., Seager, P., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Serbelloni, L., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Sponholz, P., Squarcia, S., Stanescu, C., Stapnes, S., Stavitski, I., Stevenson, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Tavernet, J. P., Tchikilev, O., Thomas, J., Tilquin, A., Timmermans, J., Tkatchev, L. G., Todorov, T., Todorova, S., Toet, D. Z., Tomaradze, A., Tome, B., Tonazzo, A., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Vanapeldoorn, G. W., Vandam, P., Vandoninck, W. K., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Weierstall, M., Weilhammer, P., Weiser, C., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zucchelli, G. C., and Zumerle, G.
Subjects: INVISIBLE WIDTH, COLLISIONS, Standard Model, DELPHI, single photon, coupling, High Energy Physics::Experiment
Abstract: This letter reports the results of the measurement of single photon production in the reaction e+e- → γ+ invisible particles at centre-of-mass energies √s = 130 and 136 GeV and an integrated luminosity of 5.83 pb-1, collected with the DELPHI detector at LEP. The signal is compatible with the prediction of the Standard Model for the process e+e- → vv̄γ, and the number of neutrino families has been determined to be Nv, = 3.1 ± 0.6. Limits have been derived on anomalous neutral gauge boson couplings and on compositeness in the framework of a specific model.
Published: 1996

41. Measurement of the partial decay width R(b)(0)=Gamma(b(b)over-bar)/Gamma(had) of the Z with the DELPHI detector at LEP

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Blyth, S Bolognese, T Bonesini, M Bonivento, W and Booth, PSL Borisov, G Bosio, C Bosworth, S Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brillault, L Brown, RCA Bruckman, P and Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC and Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chabaud, V Charpentier, P and Chaussard, L Chauveau, J Checchia, P Chelkov, GA Chen, M and Chierici, R Chliapnikov, P Chochula, P Chorowicz, V and Chudoba, J Cindro, V Collins, P Contreras, JL Contri, R and Cortina, E Cosme, G Cossutti, F Crawley, HB and Crennell, D Crosetti, G Maestro, JC Czellar, S and DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G and Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R and FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gibbs, M and Gokieli, R Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G Grzelak, K and Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F and Hahn, S Hajduk, Z Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katargin, A and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kourkoumelis, C Kouznetsov, O and Kramer, PH Krammer, M Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K and Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Liko, D Lindner, R Lipniacka, A Lippi, I and Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P and Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD and Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Pernegger, H Pernicka, M Perrotta, A and Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S and Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P Pukhaeva, N Pullia, A and Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN and Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Roncagliolo, I and Ronchese, P Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A and Rybicki, K Saarikko, H Sacquin, Y Sadovsky, A Sajot, G and Salt, J Sanchez, J Sannino, M Schimmelpfennig, M and Schneider, H Schwickerath, U Schyns, MAE Sciolla, G and Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A and Sekulin, R Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tonazzo, A Tortora, L Transtromer, G Treille, D and Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A and Turluer, ML Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, B Ullaland, O Uvarov, V Valenti, G and Vallazza, E VanderVelde, C VanApeldoorn, GW VanDam, P and VanDoninck, WK VanEldik, J Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F and Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K Yip, K and Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M and Zontar, D Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The partial decay width of the Z to quark pairs has been measured by the DELPHI detector at LEP. B-hadrons, containing b-quarks, were tagged by several methods using tracks with large impact parameters to the primary vertex complemented sometimes by event shape variables or using leptons with high transverse momentum relative to the hadron, In order to reduce the systematic uncertainties, in all methods the b-tagging efficiency has been extracted directly from the data. Combining all methods, the value: Gamma()/Gamma(had) = 0.2216 +/- 0.0016(stat.) +/- 0.0021(syst.) was found, where the production fraction was fixed to its Standard Model value.
Published: 1996

42. Measurement of the B-d(0) oscillation frequency using kaons, leptons and jet charge

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O Barrio, JM and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertrand, D Bianchi, F Bigi, M and Bilenky, MS Billoir, P Bloch, D Blume, M Blyth, S and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brillault, L Brown, RCA Bruckman, P Brunet, JM and Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Chabaud, V Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, F Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DelaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Dufour, Y Edsall, D Ehret, R Eigen, G Ekelof, T and Ekspong, G Elsing, M Engel, JP Ershaidat, N Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A and Ferrer, A Filippas, TA Firestone, A Fischer, PA and Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B and Frenkiel, P Fries, DC Frodesen, AG FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN and Gele, D Gerber, JP Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO Holt, PJ and Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C and Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mitaroff, WA Mjoernmark, U Moa, T Moeller, R Moenig, K and Monge, MR Morettini, P Mueller, H Mundin, LM Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N and Nicolaidou, R Nielsen, BS Nieuwenhuizen, M Nikolaenko, V and Niss, P Nomerotski, A Normand, A OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G and Ripp, I Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sanchez, J Sannino, M and Schimmelpfennig, M Schneider, H Schwickerath, U Schyns, MAE and Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM and Seitz, A Sekulin, R Shellard, RC Siccama, I and Siegrist, P Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Toet, DZ and Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G Treille, D Trischuk, W Tristram, G Trombini, A and Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanDoninck, WK VanEldik, J Vassilopoulos, N and Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM and Wicke, D Wickens, JH Wielers, M Wilkinson, GR and Williams, WSC Winter, M Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Subjects: High Energy Physics::Experiment
Abstract: A measurement of the mass difference, Delta m(d), be tween the two physical B-d(0) states has been obtained from the analysis of the impact parameter distribution of a lepton emitted at large transverse momentum (p(t)) relative to the jet axis and from the analysis of the flight distance distribution of secondary vertices tagged by either a high p(t) lepton or an identified kaon. In the opposite hemisphere of the event, the charge of the initial quark has been evaluated using a high p(t) lepton, a charged kaon or the mean jet charge, With 1.7 million hadronic Z(0) decays recorded by DELPHI between 1991 and 1993, Delta m(d) is found to be: Delta m(d) = 0.531 (+0.050)(-0.046) (stat.) +/- 0.078 (syst.) ps(-1).
Published: 1996

43. Search for neutralinos, scalar leptons and scalar quarks in e(+)e(-) interactions at root s=130 GeV and 136 GeV

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andersson, P Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Besancon, M Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S and Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V and Canepa, M Cankocak, K Cao, F Carena, F Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F Cowell, JH Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L DiDiodato, A and Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Durand, JD Edsall, D and Ehret, R Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Ferrer, A Fichet, S Filippas, TA Firestone, A Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F and Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D and Gandelman, M Garcia, C Garcia, J Gaspar, C Gasparini, U and Gavillet, P Gazis, EN Gele, D Gerber, JP Gokieli, R and Golob, B Gopal, G Gorn, L Gorski, M Gouz, Y and Gracco, M Graziani, E Green, C Grefrath, A Gris, P and Grosdidier, G Grzelak, K Gumenyuk, S Gunnarsson, P and Gunther, M Guy, J Hahn, F Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E and Hilke, HJ Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P and Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M and Karvelas, E Katsanevas, S Katsoufis, EC Keranen, R and Khokhlov, Y Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klapp, O Klein, H Klovning, A Kluit, P Koene, B and Kokkinias, P Koratzinos, M Korcyl, K Kostioukhine, V and Kourkoumelis, C Kouznetsov, O Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lefebure, V and Legan, CK Leitner, R Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Libby, J Liko, D Lindner, R Lipniacka, A and Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D and Lutz, P Lyons, L MacNaughton, J Maehlum, G Mahon, JR and Maio, A Malmgren, TGM Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A MartinezRivero, C MartinezVidal, F Garcia, SM Masik, J Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J and Merk, M Meroni, C Meyer, S Meyer, WT Miagkov, A and Michelotto, M Migliore, E Mirabito, L Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Pain, R and Palka, H Papadopoulou, TD Papageorgiou, K Pape, L and Parker, C Parodi, F Passeri, A Pegoraro, M Peralta, L and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O Pol, ME and Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG and Regler, M Reid, D Renton, PB Resvanis, LK Richard, F and Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A and Roncagliolo, I Ronchese, P Roos, L Rosenberg, EI and Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Silvestre, R Simonetti, S Simonetto, F Sisakian, AN and Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Sokolov, A Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stevenson, K Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T Tavernet, JP Tcherniaev, E and Tchikilev, O Thomas, J Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L Transtromer, G and Treille, D Trischuk, W Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA Tyndel, M and Tzamarias, S Ueberschaer, B Ullaland, O Uvarov, V and Valenti, G Vallazza, E VanderVelde, C VanApeldoorn, GW and VanDam, P VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS and Vilanova, D Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F Weirstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Woschnagg, K Yip, K Yushchenko, O and Zach, F Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zucchelli, GC Zumerle, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: Using data accumulated by DELPHI during the November 1995 LEP run at 130-136 GeV, searches have been made for events with jets or leptons in conjunction with missing momentum, The results are interpreted in terms of limits on the production of neutralinos, scalar leptons, and scalar quarks.
Published: 1996

44. Study of rare b decays with the DELPHI detector at LEP

Author: Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andreazza, A Andrieux, ML Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barate, R Barbi, M and Bardin, DY Baroncelli, A Barring, O Barrio, JA and Bartl, W Bates, MJ Battaglia, M Baubillier, M Baudot, J and Becks, KH Begalli, M Beilliere, P Belokopytov, Y and Benvenuti, AC Berggren, M Bertini, D Bertrand, D and Bianchi, F Bigi, M Bilenky, MS Billoir, P Bloch, D and Blume, M Bolognese, T Bonesini, M Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O Boudinov, E and Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C and Brown, RCA Bruckman, P Brunel, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S and Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V and Canepa, M Cankocak, K Cao, F Carena, F Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Chabaud, V and Charpentier, P Chaussard, L Chauveau, J Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and DeAngelis, A DeBoer, W DeBrabandere, S DeClercq, C and DeLaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Durand, JD Edsall, D Ehret, R and Eigen, G Ekelof, T Ekspong, G Elsing, M Engel, JP and Erzen, B Santo, ME Falk, E Fassouliotis, D Feindt, M and Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A and Gamba, D Gandelman, M Garcia, C Garcia, J Gasper, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hann, S Hajduk, Z Hallgren, A Hamacher, K and Hao, W Harris, FJ Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K and Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E and Katsanevas, S Katsoufis, EC Keranen, R Khokhlov, Y and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kourkoumelis, C Kouznetsov, O and Kramer, PH Krammer, M Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W Kurvinen, K and Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L and Lane, DW Langefeld, P Last, I Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Lefebure, V Legan, CK and Leitner, R Lemoigne, Y Lemonne, J Lenzen, G and Lepeltier, V Lesiak, T Libby, J Liko, D Lidner, R and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Marco, J Marco, R Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M and McCubbin, M McKay, R McNulty, R Medbo, J Merk, M and Meroni, C Meyer, S Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U and Moa, T Moeller, R Moenig, K Monge, MR Morettini, P and Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G and Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P and Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Niss, P Nomerotski, A and Normand, A Novak, M OberschulteBeckman, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Passeri, A Pegoraro, M Peralta, L Pernegger, H and Pernicka, M Perrotta, A Petridou, C Petrolini, A and Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M and Pindo, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M Privitera, P and Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H and Rames, J Ratoff, PN Read, AL Reale, M Rebecchi, P and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G and Ripp, L Romero, A Roncagliolo, I Ronchese, P Roos, L and Rosenberg, EI Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sokolov, A Solovianov, O and Sosnowski, R SouzaSantos, D Spassov, T Spiriti, E and Sponholz, P Squarcia, S Stanescu, C Stapnes, S and Stavitski, I Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, LA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D and Vincent, P Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Waldner, F Weierstall, M and Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M and Witek, M Woschnagg, K Yip, K Yushchenko, O Zach, F and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Abstract: Rare decays of beauty particles were studied in several charmless modes using the data collected with the DELPHI detector at LEP from 1991 to 1994. These decays are mediated by both tree level b–>u and one-loop penguin b–>s, d transitions. Evidence for charmless B decays was obtained in two body hadronic modes. The branching ratios of B-d,s(0) to pi(+)pi(-) or K(+)pi(-) and B-u(-) to rho(0) pi(-) or K(*0)pi(-) were found to be (2.8(-1.0)(+1.5) +/- 0.2) x 10(-5) and (1.7(-0.8)(+1.2) +/- 0.2) x 10(-4) respectively. The fraction of these decays with a charged kaon in the final state that is not from the spectator s quark, was measured to be 0.58 +/- 0.18. Upper limits were set at 90% confidence level on the branching ratios for three and four body charmless hadronic decays in the range of (1-3) x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for inclusive radiative b–>s gamma decays at 5.4 x 10(-4), for the exclusive radiative decays B-d(0)–>K*(892)(0) gamma and B-s(0)–>phi(1020)gamma at 2.1 x 10(-4) and 7.0 x 10(-4) respectively, and for dineutrino decays, b–>, in the exclusive channels B-d(0)–>K*(892)(0) nu and B-2(0)–>phi(1020) at 1.0x10(-3) respectively. The limits on dineutrino decays constrain theories with a new U(1) gauge boson coupling predominantly to the third family of fermions.
Published: 1996

45. Search for high mass gamma gamma resonances in e(+)e(-)->l(+)l(-)gamma gamma, nu(nu)over-bar-gamma gamma and q(q)over-bar-gamma gamma at LEP I

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Bardin, DY Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Baubillier, M and Baudot, J Becks, KH Begalli, M Beilliere, P and Belokopytov, Y Benvenuti, AC Berggren, M Bertini, D and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C Botner, O and Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV and Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA and Bricman, C Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T Burgsmueller, T Buschmann, P Buys, A and Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T and Canale, V Canepa, M Cankocak, K Cao, F Carena, F and Carroll, L Caso, C Gimenez, MVC Cattai, A Cavallo, FR and Chabaud, V Charpentier, P Chaussard, L Checchia, P and Chelkov, GA Chen, M Chierici, R Chliapnikov, P Chochula, P Chorowicz, V Chudoba, J Cindro, V Collins, P and Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M and Damgaard, G Dauncey, PD Davenport, M DaSilva, W Defoix, C Deghorain, A DellaRicca, G Delpierre, P Demaria, N and Angelis, A DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and SaintJean, CD Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J Drees, KA Dris, M Durand, JD Edsall, D Ehret, R Eigen, G and Ekelof, T Ekspong, G Elsing, M Engel, JP Erzen, B and Santo, ME Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Fichet, S Filippas, TA Firestone, A and Fischer, PA Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J Gaspar, C and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Gibbs, M Gokieli, R Golob, B Gopal, G Gorn, L and Gorski, M Gouz, Y Gracco, V Graziani, E Grosdidier, G and Grzelak, K Gumenyuk, S Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S Hallgren, A Hamacher, K Hao, W and Harris, FJ Hedberg, V Henriques, R Hernandez, JJ and Herquet, P Herr, H Hessing, TL Higon, E Hilke, HJ and Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M Hrubec, J Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kapusta, F Karafasoulis, K Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khokhlov, Y Khomenko, BA and Khovanski, NN King, B Kjaer, NJ Klein, H Klovning, A and Kluit, P Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kourkoumelis, C Kouznetsov, O Kramer, PH Krammer, M and Kreuter, C Kronkvist, I Krumstein, Z Krupinski, W and Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamsa, JW Lanceri, L Lane, DW Langefeld, P Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Libby, J Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malmgren, TGM Malychev, V and Mandl, F Marco, J Marco, R Marechal, B Margoni, M and Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F Garcia, SMI Masik, J Matorras, F and Matteuzii, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Medbo, J Merck, M Meroni, C Meyer, S and Meyer, WT Miagkov, A Michelotto, M Migliore, E and Mirabito, L Mitaroff, M Mjoernmark, U Moa, T Moeller, R and Moenig, K Monge, MR Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Newmann, W and Neumeister, N Nicolaidou, R Nielsen, BS Nieuwenhuizen, M and Nikolaenko, V Niss, P Nomerotski, A Normand, A Novak, M and OberschulteBeckmann, W Obraztsov, V Olshevski, AG and Onofre, A Orava, R Osterberg, K Ouraou, A Paganini, P and Paganoni, M Pages, P Pain, R Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F and Passeri, A Pegorano, M Peralta, L Pernicka, M Perrotta, A Petridou, C Petrolini, A Petrovyck, M Phillips, HT and Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D and Ragazzi, S Rahmani, H Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Saarikko, H and Sacquin, Y Sadovsky, A Sahr, O Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R and Serbelloni, L Shellard, RC Siccama, I Siegrist, P and Simonetti, S Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N Smirnova, O Smith, GR and Solovianov, O Sosnowski, R SouzaSantos, D Spassov, T and Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, L Stevenson, K Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M and Szeptycka, M Tabarelli, T Tavernet, JP Tchikilev, O and Thomas, J Tilquin, A Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tonazzo, A and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Waldner, F Weierstall, M Weilhammer, P Weiser, C Wetherell, AM Wicke, D Wickens, JH Wielers, M and Wilkinson, GR Williams, WSC Winter, M Witek, M and Woschnagg, K Yip, K Yushchenko, O Zach, F Zaitsev, A and Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E and Zimin, NI Zito, M Zontar, D Zucchelli, GC Zumerle, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment
Abstract: A search for high mass photon pairs from the processes e(+)e(-) –> l(+)l(-)gamma gamma, e(+)e(-) –> and e(+)e(-) –> nu nu gamma gamma with the DELPHI detector at LEP I is reported. From a data sample containing 3.5 million hadronic Z(0) decays, collected by DELPHI during the years 1991 to 1994, 79 events with two charged leptons and two isolated photons were selected with photon pair masses above 10 GeV/c(2), where 76 +/- 6 events were predicted from standard sources. In the same data sample, no candidates were found and no accumulation of events was visible for gamma gamma masses above 10 GeVlc2 in the q channel. Upper limits at 95% confidence level on the Z(0) branching ratios for the three different channels were extracted from the data. In the mass region m(gamma gamma) > 30 CeV/c(2) the limits obtained are between 3x10(-6) and 4x10(-6).
Published: 1996

46. Mean lifetime of the B-s(0) meson

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asman, B Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbi, M Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Barrio, JA Bartl, W Bates, MJ Battaglia, M and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Benvenuti, AC Berggren, M and Bertrand, D Bianchi, F Bigi, M Bilenky, MS Billoir, P and Bloch, D Blume, M Blyth, S Bolognese, T Bonesini, M and Bonivento, W Booth, PSL Borisov, G Bosio, C and Bosworth, S Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD and Brenke, T Brenner, RA Bricman, C Brillault, L Brown, RCA and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M Cankocak, K Cao, F Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Chapkin, M Charpentier, P Chaussard, L and Chauveau, J Checchia, P Chelkov, GA Chen, M Chierici, R and Chliapnikov, P Chochula, P Chorowicz, V Chudova, J and Cindro, V Collins, P Contreras, JL Contri, R Cortina, E and Cosme, G Cossutti, B Crawley, HB Crennell, D and Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J and Dalmagne, B Dam, M Damgaard, G Dauncey, PD and Davenport, M DaSilva, W Defoix, C Deghorain, A and DellaRicca, G Delpierre, P Demaria, N DeAngelis, A and DeBoer, W DeBrabandere, S DeClercq, C DeLaVaissiere, C and DeLotto, B DeMin, A DePaula, L DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F Dolbeau, J Donszelmann, M and Doroba, K Dracos, M Drees, J Drees, KA Dris, M and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Elsing, M Engel, JP Ershaidat, N Erzen, B Santo, ME and Falk, E Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A and Filippas, TA Firestone, A Fischer, PA Foeth, H and Fokitis, E Fontanelli, F Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R FuldaQuenzer, F and Fuster, J Galloni, A Gamba, D Gandelman, M Garcia, C and Garcia, J Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP Gibbs, M Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Grzelak, K Gumenyuk, S and Gunnarsson, P Gunther, M Guy, J Hahn, F Hahn, S and Hajduk, Z Hallgren, A Hamacher, K Hao, W Harris, FJ and Hedberg, V Henriques, R Hernandez, JJ Herquet, P Herr, H and Hessing, TL Higon, E Hilke, HJ Hill, TS Holmgren, SO and Holt, PJ Holthuizen, D Hoorelbeke, S Houlden, M and Huet, K Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P and Janik, R Jarlskog, C Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C and Juillot, P Kaiser, M Kapusta, F Karafasoulis, K and Karlsson, M Karvelas, E Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ and Klein, H Klovning, A Kluit, P Koene, B Kokkinias, P and Koratzinos, M Korcyl, K Kostioukhine, V Kourkoumelis, C and Kouznetsov, O Kramer, PH Krammer, M Kreuter, C and Kronkvist, I Krumstein, Z Krupinski, W Kubinec, P and Kucewicz, W Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lefebure, V Legan, CK Leitner, R Lemoigne, Y and Lemonne, J Lenzen, G Lepeltier, V Lesiak, T Liko, D and Lindner, R Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G Maio, A Malychev, V Mandl, F Marco, J and Marco, R Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A Maron, T MartinezRivero, C MartinezVidal, F and Garcia, SMI Masik, J Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R and Medbo, J Merk, M Meroni, C Meyer, S Meyer, WT and Michelotto, M Migliore, E Mirabito, L Mitaroff, WA and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A Novak, M OberschulteBeckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Ostankov, A Osterberg, K Ouraou, A Paganini, P Paganoni, M and Pages, P Palka, H Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C Parodi, F Passeri, A Pegoraro, M and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Petrovyck, M Phillips, HT Piana, G Pierre, F Pimenta, M Pindo, M Plaszczynski, S Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H Ratoff, PN Read, AL Reale, M Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB and Resvanis, LK Richard, F Richardson, J Ridky, J Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P Ross, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J and Sanchez, J Sannino, M Schimmelpfennig, M Schneider, H and Schwickerath, U Schyns, MAE Sciolla, G Scuri, F Seager, P Sedykh, Y Segar, AM Seitz, A Sekulin, R Shellard, RC Siccama, I Siegrist, P Simonetti, S Simonetto, F and Sisakian, AN Sitar, B Skaali, TB Smadja, G Smirnov, N and Smirnova, O Smith, GR Sosnowski, R SouzaSantos, D and Spassov, T Spiriti, E Sponholz, P Squarcia, S Stanescu, C Stapnes, S Stavitski, I Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tavernet, JP Tchikilev, O Tilquin, A and Timmermans, J Tkatchev, LG Todorov, T Todorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A Tortora, L and Transtromer, G Treille, D Trischuk, W Tristram, G and Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA and Tyndel, M Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E VanderVelde, C and VanApeldoorn, GW VanDam, P VanDoninck, WK VanEldik, J and Vassilopoulos, N Vegni, G Ventura, L Venus, W Verbeure, F Verlato, M Vertogradov, LS Vilanova, D Vincent, P and Vitale, L Vlasov, E Vodopyanov, AS Vrba, V Wahlen, H and Walck, C Weierstall, M Weilhammer, P Weiser, C and Wetherell, AM Wicke, D Wickens, JH Wielers, M Wilkinson, GR Williams, WSC Winter, M Witek, M Woschnagg, K and Yip, K Zach, F Zaitsev, A Zalewska, A Zalewski, P and Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Abstract: This paper presents an update of the measurement of the mean lifetime of the B-s(0) meson. Combining D-s - l, D-s - h, phi - l and inclusive D-s final states from the 3.2 million hadronic Z decays collected by DELPHI between 1991 and 1994, the B-s(0) mean lifetime was measured to be: tau(B-s(0)) = 1.67 +/- 0.14 ps.
Published: 1996

47. A measurement of the photon structure function F-2(gamma) at an average Q(2) of 12 GeV2/c(4)

Author: Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I and Aleksan, R Alekseev, GD Allport, PP Almehed, S Alvsvaag, SJ Amaldi, U Amato, S Andreazza, A Andrieux, ML and Antilogus, P Apel, WD Arnoud, Y Asam, B Augustin, JE and Augustinus, A Baillon, P Bambade, P BArao, F Barate, R and Bardin, DY Barker, GJ Baroncelli, A Barring, O and Barrio, JA Bartl, W Bates, MJ Battaglia, M Batyunya, B and Baubillier, M Baudot, J Becks, KH Begalli, M and Beilliere, P Belokopytov, Y Belous, K Benvenuti, AC and Berggren, M Bertrand, D Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bloch, D Blume, M Blyth, S Bocci, V and Bolognese, T Bonesini, M Bonivento, W Booth, PSL and Borisov, G Bosio, C Bosworth, S Botner, O Bouquet, B and Bourdarios, C Bowcock, TJV Bozzo, M Branchini, P Brand, KD Brenke, T Brenner, RA Bricman, C Brillault, L and Brown, RCA Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Buys, A Caccia, M Calvi, M and Rozas, AJC Comporesi, T Canale, V Canepa, M and Cankocak, K Cao, F Carena, F Carrilho, P Carroll, L and Caso, C Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Chabaud, V Charpentier, P Chaussard, L Chauveau, J and Checchia, P Chelkov, GA CHierici, R Chliapnikov, P and Chochula, P Chorowicz, V Cindro, V Collins, P Contreras, JL Contri, R Cortina, E Cosme, G Cossutti, F and Crawley, HB Crennell, D Crosetti, G Maestro, JC Czellar, S DahlJensen, E Dahm, J Dalmagne, B Dam, M Damgaard, G Daum, A Dauncey, PD Davenport, M Silva, WD Defoix, C Ricca, GD Delpierre, P Demaria, N DeAngelis, A and DeBoeck, H DeBoer, W DeBrabandere, S DeClercq, C and DelaVaissiere, C DeLotto, B DeMin, A DePaula, L and DeSaintJean, C Dijkstra, H DiCiaccio, L Djama, F and Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J and Drees, KA Dris, M Dufour, Y Dupont, F Edsall, D and Ehret, R Eigen, G Ekelof, T Ekspong, G Elsing, M and Engel, JP Ershaidat, N Erzen, B Santo, ME Falk, E and Fassouliotis, D Feindt, M Fenyuk, A Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F and Formenti, F Franek, B Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R FuldaQuenzer, F Furstenau, H Fuster, J and Galloni, A Gamba, D Gandelman, M Garcia, C Garcia, J and Gaspar, C Gasparini, U Gavillet, P Gazis, EN Gele, D and Gerb, JP Gibbs, M Gillespie, D Gokieli, R Golob, B and Gopal, G Gorn, L Gorski, M Gouz, Y Gracco, V and Graziani, E Grosdidier, G Gunnarsson, P Gunther, M Guy, J Haedinger, U Hahn, F Hahn, M Hahn, S Hajduk, Z and Hallgren, A Hamacher, K Hao, W Harris, FJ Hedberg, V and Hernandez, JJ Herquet, P Herr, H Hessing, TL Higon, E and Hilke, HJ Hill, TS Holmgren, SO Holt, PJ Holthuizen, D Houlden, M Hrubec, J Huet, K Hultqvist, K Ioannou, P Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, G Jarry, P JeanMarie, B Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P Kaiser, M Kalmus, G and Kapusta, F Karlsson, M Karvelas, E Katsanevas, S and Katsoufis, EC Keranen, R Khomenko, BA Khovanski, NN and King, B Kjaer, NJ Klein, H Klovning, A Kluit, P and Koehne, JH Koene, B Kokkinias, P Koratzinos, M Korcyl, K and Kostioukhine, V Kourkoumelis, C Kouznetsov, O Kramer, PH and Krammer, M Kreuter, C Krolikowski, J Kronkvist, I and Krumstein, Z Krupinski, W Kubinec, P Kucewicz, W and Kurvinen, K Lacasta, C Laktineh, I Lamblot, S Lamsa, JW and Lanceri, L Lane, DW Langefeld, P Lapin, V Last, I and Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leitner, R Lemoigne, Y Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Liko, D Lindner, R and Lipniacka, A Lippi, I Loerstad, B Lokajicek, M and Loken, JG Lopez, JM LopezFernandez, A Aguera, MAL and Loukas, D Lutz, P Lyons, L MacNaughton, J Maehlum, G and Maio, A Malychev, V Mandl, F Marco, J Marechal, B and Margoni, M Marin, JC Mariotti, C Markou, A Maron, T and MartinezRivero, C MartinezVidal, F Garcia, SM Matorras, F and Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M and McKay, R McNulty, R Medbo, J Meroni, C Meyer, WT and Miagkov, A Michelotto, M Migliore, E Mirabito, L and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Mundim, LM Murray, WJ Muryn, B and Myatt, G Naraghi, F Navarria, FL Navas, S Negri, P and Nemecek, S Neumann, W Neumeister, N Nicolaidou, R and Nielsen, BS Nieuwenhuizen, M Nikolaenko, V Niss, P and Nomerotski, A Normand, A OberschulteBeckmann, W Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K and Ouraou, A Paganini, P Paganoni, M Pages, P Palka, H and Papadopoulou, TD Pape, L Parkes, C Parodi, F Passeri, A and Pegoraro, M Peralta, L Pernegger, H Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT Piana, G Pierre, F Pimenta, M Plaszczynski, S Podobrin, O and Pol, ME Polok, G Poropat, P Pozdniakov, V Prest, M and Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J Ratoff, PN Read, AL Reale, M and Rebecchi, P Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, J Ridky, J and Rinaudo, G Ripp, I Romero, A Roncagliolo, I Ronchese, P and Roos, L Rosenberg, EI Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W RuhlmannKleider, V Ruiz, A Rybicki, K and Saarikko, H Sacquin, Y Sadovsky, A Sajot, G Salt, J and Sanchez, J Sannino, M Schneider, H Schyns, MAE Sciolla, G Scuri, F Sedykh, Y Segar, AM Seitz, A Sekulin, R and Shellard, RC Siccama, I Siegrist, P Simonetti, S and Simonetto, F Sisakian, AN Sitar, B Skaali, TB Smadja, G and Smirnov, N Smirnova, O Smith, GR Sosnowski, R and SouzaSantos, D Spassov, T Spiriti, E Sponholz, P and Squarcia, S Stanescu, C Stapnes, S Stavitski, I and Stepaniak, K Stichelbaut, F Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M Tabarelli, T and Tavernet, JP Tchikilev, O Tilquin, A Timmermans, J and Tkatchev, LG Todorov, T Toet, DZ Tomaradze, A Tome, B and Tortora, L Transtromer, G Treille, D Trischuk, W and Tristram, G Trombini, A Troncon, C Tsirou, A Turluer, ML and Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, B and Ullaland, O Uvarov, V Valenti, G Vallazza, E and VanderVelde, C VanApeldoorn, GW VanDam, P VanDoninck, WK and VanEldik, J Vassilopoulos, N Vegni, G Vlasov, E and Vodopyanov, AS Vrba, V Wahlen, H Walck, C Waldner, F and Weierstall, M Weihammer, P Wetherell, AM Wicke, D and Wickens, JH Wielers, M Wilkinson, GR Williams, WSC and Winter, M Witek, M Woschnagg, K Yip, K Yushchenko, O and Zach, F Zacharatou, C Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zito, M Zontar, D and Zuberi, R Zucchelli, GC Zumerle, G
Abstract: The hadronic photon structure function F-2(gamma) has been measured in the Q(2) range from 4 to 30 GeV2/c(4) and down to x values of order 0.001, using data taken with the DELPHI detector at LEP between 1991 and 1993. A comparison is made with several F-2(gamma) parameterizations with special emphasis on their low rr: behaviour. A result on the Q(2) evolution of F-2(gamma) is presented.
Published: 1996

48. OBSERVATION OF SHORT-RANGE 3-PARTICLE CORRELATIONS IN E(+)E(-) ANNIHILATIONS AT LEP ENERGIES

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Ajinenko, I., Aleksan, R., Alekseev, G. D., Allport, P. P., Almehed, S., Alvsvaag, S. J., Amaldi, U., Amato, S., Andreazza, A., Andrieux, M. L., Antilogus, P., Apel, W. D., Arnoud, Y., Asman, B., Augustin, J. E., Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, G., Bardin, D. Y., Barker, G. J., Baroncelli, A., Barring, O., Barrio, J. A., Bartl, W., Bates, M. J., Battaglia, M., Baubillier, M., Baudot, J., Becks, K. H., Begalli, M., Beilliere, P., Belokopytov, Y., Belous, K., Benvenuti, A. C., Berggren, M., Bertrand, D., Bianchi, F., Bigi, M., Bilenky, M. S., Billoir, P., Bloch, D., Blume, M., Blyth, S., Bocci, V., Bolognese, T., Bonesini, M., Bonivento, W., P. S. L., Borisov, G., Bosio, C., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., T. J. V., Bozzo, M., Branchini, P., Brand, K. D., Brenner, R. A., Bricman, C., Brillault, L., R. C. A., Bruckman, P., Brunet, J. M., Bugge, L., Buran, T., Buys, A., Caccia, M., Calvi, M., A. J. C., Camporesi, T., Canale, V., Canepa, M., Cankocak, K., Cao, F., Carena, F., Carrilho, P., Carroll, L., Caso, C., M. V. C., Cattai, A., Cavallo, F. R., Cerrito, L., Chabaud, V., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, G. A., Chierici, R., Chochula, P., Chorowicz, V., Cindro, V., Collins, P., Contreras, J. L., Contri, R., Cortina, E., Cosme, G., Cossutti, F., Crawley, H. B., Crennell, D., Crosetti, G., Maestro, J. C., Czellar, S., Dahljensen, E., Dahm, J., Dalmagne, B., Dam, M., Damgaard, G., Daum, A., Dauncey, P. D., Davenport, M., Dasilva, W. E., Defoix, C., Ricca, G. D., Delpierre, P., Demaria, N., Deangelis, A., Deboeck, H., Deboer, W., Debrabandere, S., Declercq, C., Delavaissiere, C., Delotto, B., Demin, A., Depaula, L., Desaintjean, C., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Drees, K. A., Dris, M., Dufour, Y., Dupont, F., Edsall, D., Ehret, R., Eigen, G., Ekelof, T., Ekspong, G., Elsing, M., Engel, J. P., Ershaidat, N., Erzen, B., Santo, M. E., Falk, E., Fassouliotis, D., Feindt, M., Fenyuk, A., Ferrer, A., Filippas, T. A., Firestone, A., Fischer, P. A., Foeth, H., Fokitis, E., Fontanelli, F., Formenti, F., Franek, B., Frenkiel, P., Fries, D. C., Frodesen, A. G., Fruhwirth, R., Fuldaquenzer, F., Furstenau, H., Fuster, J., Galloni, A., Gamba, D., Gandelman, M., Garcia, C., Garcia, J., Gaspar, C., Gasparini, Ugo, Gavillet, P., Gazis, E. N., Gele, D., Gerber, J. P., Gibbs, M., Gillespie, D., Gokieli, R., Golob, B., Gopal, G., Gorn, L., Gorski, M., Gouz, Y., Gracco, V., Graziani, E., Grosdidier, G., Gunnarsson, P., Gunther, M., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Hahn, S., Hajduk, Z., Hallgren, A., Hamacher, K., Hao, W., Harris, F. J., Hedberg, V., Henriques, R., Hernandez, J. J., Herquet, P., Herr, H., Hessing, T. L., Higon, E., Hilke, H. J., Hill, T. S., Holmgren, S. O., Holt, P. J., Holthuizen, D., Houlden, M., Huet, K., Hultqvist, K., Ioannou, P., Jackson, J. N., Jacobsson, R., Jalocha, P., Janik, R., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, E. K., Jonsson, L., Jonsson, P., Joram, C., Juillot, P., Kaiser, M., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katargin, A., Katsanevas, S., Katsoufis, E. C., Keranen, R., Khomenko, B. A., Khovanski, N. N., King, B., Kjaer, N. J., Klein, H., Klovning, A., Kluit, P., Koehne, J. H., Koene, B., Kokkinias, P., Koratzinos, M., Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, P. H., Krammer, M., Kreuter, C., Krolikowski, J., Kronkvist, I., Krumstein, Z., Krupinski, W., Kubinec, P., Kucewicz, W., Kurvinen, K., Lacasta, C., Laktineh, I., Lamblot, S., Lamsa, J. W., Lanceri, L., Lane, D. W., Langefeld, P., Lapin, V., Last, I., Laugier, J. P., Lauhakangas, R., Leder, G., Ledroit, F., Lefebure, V., Legan, C. K., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Liko, D., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, J. G., Lopez, J. M., Lopezfernandez, A., M. A. L., Loukas, D., Lutz, P., Lyons, L., Macnaughton, J., Maehlum, G., Maio, A., Malychev, V., Mandl, F., Marco, J., Marechal, B., Margoni, Martino, Marin, J. C., Mariotti, C., Markou, A., Maron, T., Martinezrivero, C., Martinezvidal, F., Garcia, S. M., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Medbo, J., Meroni, C., Meyer, W. T., Miagkov, A., Michelotto, M., Migliore, E., Mirabito, L., Mitaroff, W. A., Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., Monge, M. R., Morettini, P., Mueller, H., Mundim, L. M., Murray, W. J., Muryn, B., Myatt, G., Naraghi, F., Navarria, F. L., Navas, S., Negri, P., Nemecek, S., Neumann, W., Neumeister, N., Nicolaidou, R., Nielsen, B. S., Nieuwenhuizen, M., Nikolaenko, V., Niss, P., Nomerotski, A., Normand, A., Oberschultebeckmann, W., Obraztsov, V., Olshevski, A. G., Onofre, A., Orava, R., Osterberg, K., Ouraou, A., Paganini, P., Paganoni, M., Pages, P., Palka, H., Papadopoulou, T. D., Pape, L., Parkes, C., Parodi, F., Passeri, A., Pegoraro, M., Peralta, L., Pernegger, H., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Phillips, H. T., Piana, G., Pierre, F., Pimenta, M., Plaszczynski, S., Podobrin, O., Pol, M. E., Polok, G., Poropat, P., Pozdniakov, V., Prest, M., Privitera, P., Pukhaeva, N., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Rames, J., Ratoff, P. N., Read, A. L., Reale, M., Rebecchi, P., Redaelli, N. G., Regler, M., Reid, D., Renton, P. B., Resvanis, L. K., Richard, F., Richardson, J., Ridky, J., Rinaudo, G., Ripp, I., Romero, A., Roncagliolo, I., Ronchese, Paolo, Roos, L., Rosenberg, E. I., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Saarikko, H., Sacquin, Y., Sadovsky, A., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schneider, H., M. A. E., Sciolla, G., Scuri, F., Sedykh, Y., Segar, A. M., Seitz, A., Sekulin, R., Shellard, R. C., Siccama, I., Siegrist, P., Simonetti, S., Simonetto, Franco, Sisakian, A. N., Sitar, B., Skaali, T. B., Smadja, G., Smirnov, N., Smirnova, O., Smith, G. R., Sokolov, A., Sosnowski, R., Souzasantos, D., Spassov, T., Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavitski, I., Stepaniak, K., Stichelbaut, F., Stocchi, A., Strauss, J., Strub, R., Stugu, B., Szczekowski, M., Szeptycka, M., Tabarelli, T., Toet, D. Z., Tomaradze, A., Tome, B., Tortora, L., Transtromer, G., Treille, D., Trischuk, W., Tristram, G., Trombini, A., Troncon, C., Tsirou, A., Turluer, M. L., Tyapkin, I. A., Tyndel, M., Tzamarias, S., Ueberschaer, B., Ueberschaer, S., Ullaland, O., Valenti, G., Vallazza, E., Velde, C. V., Vanapeldoorn, G. W., Vandam, P., Vaneldik, J., Vassilopoulos, N., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Verlato, M., Vertogradov, L. S., Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, A. S., Vrba, V., Wahlen, H., Walck, C., Wehr, A., Weierstall, M., Weilhammer, P., Wetherell, A. M., Wicke, D., Wickens, J. H., Wielers, M., Wilkinson, G. R., W. S. C., Winter, M., Witek, M., Woschnagg, K., Yip, K., Yushchenko, O., Zach, F., Zacharatou, C., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zimin, N. I., Zito, M., Zontar, D., Zuberi, R., Zucchelli, G. C., and Zumerle, Gianni
Subjects: BOSE-EINSTEIN CORRELATIONS, LUND MONTE-CARLO, HADRONIC Z0 DECAYS, JET FRAGMENTATION, E+E ANNIHILATION, COLLISIONS, PHYSICS, Z(0), DELPHI, Bose-Einstein correlation, fragmentation, jet, High Energy Physics::Experiment
Abstract: Measurements are presented of short range three-particle correlations in e+e- annihilations at LEP using data collected by the DELPHI detector. At small values of the four-momentum difference, strong three-particle correlations are observed for like-sign (+++ and ---) and for unlike-sign (++- and +--) pion combinations which are not a consequence of two-particle correlations. A possible explanation of the observed effects in like-sign combinations is the existence of higher order Bose-Einstein interference, which significantly changes the particle distributions in jets. © 1995.
Published: 1995

49. INCLUSIVE MEASUREMENTS OF THE K+/- AND P/(P)OVER-BAR PRODUCTION IN HADRONIC Z(0) DECAYS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALVSVAAG, SJ AMALDI, U AMATO, S ANDREAZZA, A ANDRIEUX, ML and ANTILOGUS, P APEL, WD ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O and BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M and BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P and BELOKOPYTOV, Y BELOUS, K BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BIGI, M BILENKY, MS BILLOIR, P and BJARNE, J BLOCH, D BLUME, M BLYTH, S BOCCI, V and BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL and BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O and BOUDINOV, E BOUQUET, B BOURDARIOS, C BOWCOCK, TJV and BOZZO, M BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C and BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM and BUGGE, L BURAN, T BUYS, A CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CANEPA, M CANKOCAK, K and CAO, F CARENA, F CARRILHO, P CARROLL, L CASO, C and CASSIO, V GIMENEZ, MVC CATTAI, A CAVALLO, FR CHAUVEAU, J and CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOCHULA, P and CHOROWICZ, V CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSSUTTI, F CRAWLEY, HB and CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S and DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G and DAUM, A DAUNCEY, PD DAVENPORT, M DASILVA, W DEFOIX, C and DELLARICCA, G DELPIERRE, P DEMARIA, N DEANDELIS, A and DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERQ, C and DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L and DESAINTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DUPONT, F EDSALL, D and EHRET, R EIGEN, G EKELOF, T EKSPONG, G ELSING, M and ENGEL, JP ERSHAIDAT, N SANTO, ME FALALEEV, V and FASSOULIOTIS, D FEINDT, M FERRER, A FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG and FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J and GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C and GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP and GILLESPIE, D GOKIELI, R GOLOB, B GOPAL, G GORN, L and GORSKI, M GRACCO, V GRARD, F GRAZIANI, E GROSDIDIER, G GUNNARSSON, P GUNTHER, M GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A and HALLGREN, A HAMACHER, K HAO, W HARRIS, FJ HEDBERG, V and HENRIQUES, R HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO and HOLT, PJ HOLTHUIZEN, D HOULDEN, M HRUBEC, J HUET, K and HULTQVIST, K IOANNOU, P JACKSON, JN JACOBSSON, R and JALOCHA, P JANIK, R JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JONSSON, L JORAM, C JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A and KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUMSTEIN, Z and KRUPINSKI, W KUBINEC, P KUCEWICZ, W KURVINEN, K LACASTA, C LAKTINEH, I LAMBLOT, S LAMSA, JW LANCERI, L LANE, DW LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP and LAUHAKANGAS, R LEDER, G LEDROIT, F LEFEBURE, V LEGAN, CK and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G and LEPELTIER, V LESIAK, T LIKO, D LIDNER, R LIPNIACKA, A and LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, JM LOPEZFERNANDEZ, A AGUERA, MAL LOUKAS, D LUTZ, P and LYONS, L MACNAUGHTON, J MAEHLUM, G MAIO, A MALYCHEV, V and MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC and MARIOTTI, C MARKOU, A MARON, T MARTINEZRIVERO, C and MARTINEZVIDAL, F GARCIA, SMI MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIRABITO, L MITAROFF, WA MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MUNDIM, LM MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAVARRIA, FL NAVAS, S NEGRI, P NEMECEK, S NEUMANN, W and NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NIKOLAENKO, V and NISS, P NOMEROTSKI, A NORMAND, A OBERSCHULTEBECKMANN, W and OBRAZTSOV, V OLSHEVSKI, AG ONOFRE, A ORAVA, R and OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAGES, P and PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERNEGGER, H PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, E PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O and POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RAMES, J RATOFF, PN READ, AL REALE, M REBECCHI, P and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G and RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P ROOS, L and ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H and SACQUIN, Y SADOVSKY, A SAJOT, G SALT, J SANCHEZ, J and SANNINO, M SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F and SEDYKH, Y SEGAR, AM SEITZ, A SEKULIN, R SHELLARD, RC and SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SITAR, B SKAALI, TB SMADJA, G SMIRNOV, N and SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D and SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAPNES, S STAVITSKI, I STEPANIAK, K STICHELBAUT, F and SZEPTYCKA, M TABARELLI, T TAVERNET, JP TCHIKILEV, O and TILQUIN, A TIMMERMANS, J TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORASSA, E TORTORA, L and TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G and TROMBINI, A TRONCON, C TSIROU, A TURLUER, ML TYAPKIN, LA and TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANELDIK, J VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P and VITALE, L VLASOV, E VODOPYANOV, AS VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKE, D WICKENS, JH and WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YU, L YUSHCHENKO, O and ZACH, F ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATOKOS, E ZIMIN, NI ZITO, M ZONTAR, D and ZUBERI, R ZUCCHELLI, GC ZUMERLE, G
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: This analysis, based on a sample of 170000 hadronic Z(0) decays, provides a measurement of the K-+/- and p/($) over bar p differential cross sections which is compared to string- and cluster fragmentation models. The total multiplicities for K-+/- and pip per hadronic event were found to be: N-K = 2.26 +/- 0.18 and N-p = 1.07 +/- 0.14. The positions xi* of the maxima of the differential cross sections as a function of xi = In(1/x(p)) for K-+/- and p/($) over bar p were determined to be 2.63 +/- 0.07 and 2.96 +/- 0.16 respectively. A comparison of the xi* values for various identified particles measured at LEP with the prediction of the Modified Leading Logarithm Approximation with Local Parton Hadron Duality model has been performed. The measured xi* position as a function of the hadron mass, after corrections due to particle decays, is in agreement with the model calculation.
Published: 1995

50. Lifetime of Charged and Neutral B-hadrons Using Event Topology

Author: Zumerle, G., Zucchelli, Gc, Zuberi, R., Zontar, D., Zito, M., Zimin, Ni, Zhigunov, V., Zevgolatakos, E., Zavrtanik, D., Zalewski, P., Zalewska, A., Zaitsev, A., Zacharatou, C., Zach, F., Yushchenko, O., Yip, K., Woschnagg, K., Witek, M., Winter, M., Williams, Wsc, Wilkinson, Gr, Wielers, M., Wickens, Jh, Wicke, D., Wetherell, Am, Weilhammer, P., Weierstall, M., Wehr, A., Waldner, F., Walck, C., Wahlen, H., Vrba, V., Vodopyanov, As, Vlasov, E., Vitale, L., Vincent, P., Vilanova, D., Vertogradov, Ls, Verlato, M., Verbeure, F., Venus, W., Ventura, L., Vegni, G., Vassilopoulos, N., Vaneldik, J., Vandoninck, Wk, Vandam, P., Vanapeldoorn, Gw, Velde, Cv, Vallazza, E., Valenti, G., Uvarov, V., Ullaland, O., Ueberschaer, S., Ueberschaer, B., Tzamarias, S., Tyndel, M., Tyapkin, Ia, Turluer, Ml, Tsirou, A., Troncon, C., Trombini, A., Tristram, G., Trischuk, W., Treille, D., Transtromer, G., Tortora, L., Tome, B., Tomaradze, A., Toet, Dz, Todorov, T., Tkatchev, Lg, Timmermans, J., Tilquin, A., Tchikilev, O., Tavernet, Jp, Tabarelli, T., Szeptycka, M., Szczekowski, M., Stugu, B., Strub, R., Stocchi, A., Stichelbaut, F., Stepaniak, K., Stavitski, I., Stapnes, S., Stanescu, C., Staeck, H., Squarcia, S., Spiriti, E., Spassov, T., Souzasantos, D., Sosnowski, R., Smith, Gr, Smirnova, O., Smirnov, N., Smadja, G., Skaali, Tb, Sitar, B., Sisakian, An, Simonetto, F., Simonetti, S., Siegrist, P., Siccama, I., Shellard, Rc, Sekulin, R., Seitz, A., Segar, Am, Sedykh, Y., Scuri, F., Sciolla, G., Schyns, Mae, Schneider, H., Sannino, M., Sanchez, J., Salt, J., Sajot, G., Sadovsky, A., Sacquin, Y., Saarikko, H., Ruiz, A., Ruhlmannkleider, V., Ruckstuhl, W., Rovelli, T., Roudeau, P., Rosso, E., Rosenberg, Ei, Roos, L., Ronchese, P., Roncagliolo, I., Romero, A., Ripp, I., Rinaudo, G., Ridky, J., Richardson, J., Richard, F., Resvanis, Lk, Renton, Pb, Reid, D., Regler, M., Redaelli, Ng, Rebecchi, P., Reale, M., Read, Al, Ratoff, Pn, Rames, J., Rahmani, H., Ragazzi, S., Radojicic, D., Pullia, A., Pukhaeva, N., Privitera, P., Prest, M., Pozdniakov, V., Poropat, P., Polok, G., Pol, Me, Podobrin, O., Plaszczynski, S., Pimenta, M., Pierre, F., Piana, G., Philips, Ht, Petrolini, A., Petridou, C., Perrotta, A., Pernicka, M., Pernegger, H., Peralta, L., Pegoraro, M., Passeri, A., Parodi, F., Parkes, C., Pape, L., Papadopoulou, Td, Palka, H., Pages, P., Paganoni, M., Paganini, P., Ouraou, A., Osterberg, K., Orava, R., Onofre, A., Olshevski, Ag, Obraztsov, V., Oberschultebeckmann, W., Normand, A., Nomerotski, A., Niss, P., Nikolaenko, V., Nieuwenhuizen, M., Nielsen, Bs, Nicolaidou, R., Neumeister, N., Neumann, W., Nemecek, S., Negri, P., Navas, S., Navarria, Fl, Naraghi, F., Myatt, G., Muryn, B., Murray, Wj, Mundim, Lm, Mueller, H., Morettini, P., MONGE, MR, Moenig, K., Moeller, R., Moa, T., Mjoernmark, U., Mitaroff, Wa, Mirabito, L., Migliore, E., Michelotto, M., Meyer, Wt, Meroni, C., Medbo, J., Mcnulty, R., Mckay, R., Mccubbin, M., Mazzucato, M., Matthiae, G., Matteuzzi, C., Matorras, F., Garcia, Smi, Martinezvidal, F., Maron, T., Markou, A., Mariotti, C., Marin, Jc, Margoni, M., Marechal, B., Marco, J., Mandl, F., Malychev, V., Maio, A., Maehlum, G., Macnaughton, J., Lyons, L., Lutz, P., Loukas, D., Aguera, Mal, Lopezfernandez, A., Loken, Jg, Lokajicek, M., Loerstad, B., Lippi, I., Lipniacka, A., Lindner, R., Liko, D., Lesiak, T., Lepeltier, V., Lenzen, G., Lemonne, J., Lemoigne, Y., Leitner, R., Legan, Ck, Lefebure, V., Ledroit, F., Leder, G., Lauhakangas, R., Laugier, Jp, Last, I., Lapin, V., Langefeld, P., Lane, Dw, Lanceri, L., Lamsa, Jw, Lamblot, S., Laktineh, I., Lacasta, C., Kurvinen, K., Kucewicz, W., Kubinec, P., Krupinski, W., Krumstein, Z., Kronkvist, I., Krolikowski, J., Kreuter, C., Krammer, M., Kramer, Ph, Kouznetsov, O., Kourkoumelis, C., Kostioukhine, V., Korcyl, K., Koratzinos, M., Kokkinias, P., Koene, B., Koehne, Jh, Kluit, P., Klovning, A., Klein, H., Kjaer, Nj, King, B., Khovanski, Nn, Khomenko, Ba, Keranen, R., Katsoufis, Ec, Katsanevas, S., Karvelas, E., Karlsson, M., Kapusta, F., Kalmus, G., Kaiser, M., Juillot, P., Joram, C., Jonsson, P., Jonsson, L., Johansson, Ek, Jeanmarie, B., Jarry, P., Jarlskog, G., Janik, R., Jalocha, P., Jacobsson, R., Jackson, Jn, Ioannou, P., Hultqvist, K., Huet, K., Hrubec, J., Houlden, M., Holthuizen, D., Holt, Pj, Holmgren, So, Hill, Ts, Hilke, Hj, Higon, E., Hessing, Tl, Herr, H., Herquet, P., Hernandez, Jj, Henriques, R., Hedberg, V., Harris, Fj, Hao, W., Hamacher, K., Hallgren, A., Hajduk, Z., Hahn, S., Hahn, M., Hahn, F., Haedinger, U., Guy, J., Gunther, M., Gunnarsson, P., Grosdidier, G., Graziani, E., Gracco, V., Gouz, Y., Gorski, M., Gorn, L., Gopal, G., Golob, B., Gokieli, R., Gillespie, D., Gibbs, M., Gerber, Jp, Gele, D., Gazis, En, Gavillet, P., Gasparini, U., Gaspar, C., Garcia, J., Garcia, C., Gandelman, M., Gamba, D., Galloni, A., Fuster, J., Furstenau, H., Fuldaquenzer, F., Fruhwirth, R., Frodesen, Ag, Fries, Dc, Frenkiel, P., Franek, B., Formenti, F., Fontanelli, F., Fokitis, E., Foeth, H., Fischer, Pa, Firestone, A., Filippas, Ta, Ferrer, A., Feindt, M., Fassouliotis, D., Falk, E., Santo, Me, Erzen, B., Ershaidat, N., Engel, Jp, Elsing, M., Ekspong, G., Ekelof, T., Eigen, G., Ehret, R., Edsall, D., Dupont, F., Dufour, Y., Dris, M., Drees, Ka, Drees, J., Dracos, M., Doroba, K., Donszelmann, M., Dolbeau, J., Djama, F., Diciaccio, L., Dijkstra, H., Desaintjean, C., Depaula, L., Demin, A., Delotto, B., Delavaissiere, C., Declercq, C., Debrabandere, S., Deboer, W., Deboeck, H., Deangelis, A., Demaria, N., Delpierre, P., Dellaricca, G., Defoix, C., Dasilva, W., Davenport, M., Dauncey, Pd, Daum, A., Damgaard, G., Dam, M., Dalmagne, B., Dahm, J., Dahljensen, E., Czellar, S., Maestro, Jc, Crosetti, G., Crennell, D., Crawley, Hb, Cossutti, F., Cosme, G., Cortina, E., Contri, R., Contreras, Jl, Collins, P., Cindro, V., Chorowicz, V., Chochula, P., Chliapnikov, P., Chierici, R., Chelkov, Ga, Checchia, P., Chauveau, J., Chaussard, L., Charpentier, P., Chabaud, V., Cerrito, L., Cavallo, Fr, Cattai, A., Gimenez, Mvc, Caso, C., Carroll, L., Carrilho, P., Carena, F., Cao, F., Cankocak, K., Canepa, M., Canale, V., Camporesi, T., Rozas, Ajc, Calvi, M., Caccia, M., Buys, A., Buran, T., Bugge, L., Brunet, Jm, Bruckman, P., Brown, Rca, Brillault, L., Bricman, C., Brenner, Ra, Brand, Kd, Branchini, P., Bozzo, M., Bowcock, Tjv, Bourdarios, C., Bouquet, B., Botner, O., Bosworth, S., Bosio, C., Borisov, G., Booth, Psl, Bonivento, W., Bonesini, M., Bolognese, T., Bocci, V., Blyth, S., Blume, M., Bloch, D., Billoir, P., Bilenky, Ms, Bigi, M., Bianchi, F., Bertrand, D., Berggren, M., Benvenuti, Ac, Belokopytov, Y., Beilliere, P., Begalli, M., Becks, Kh, Baudot, J., Baubillier, M., Battaglia, M., Bates, Mj, Bartl, W., Barrio, Ja, Barring, O., Baroncelli, A., Barker, Gj, Bardin, Dy, Barate, R., Barao, F., Bambade, P., Baillon, P., Augustinus, A., Augustin, Je, Asman, B., Arnoud, Y., Apel, Wd, Anykeyev, V., Antilogus, P., Andrieux, Ml, Andreazza, A., Amato, S., Amaldi, U., Alvsvaag, Sj, Almehed, S., Allport, Pp, Alekseev, Gd, Aleksan, R., Ajinenko, I., Agasi, E., Adye, T., Adam, W., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), DELPHI, Delphi, Collaboration, Abreu, P., Adam, W., Canale, Vincenzo, UCL - SST/IRMP - Institut de recherche en mathématique et physique, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Cossutti, F., DELLA RICCA, Giuseppe, Lanceri, Livio, Poropat, Paolo, and Vitale, Lorenzo
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Meson, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, B hadron, 01 natural sciences, Partícules (Física nuclear), JET FRAGMENTATION, DELPHI, lifetime, jet tagging, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), E+E-PHYSICS, Physics, 010308 nuclear & particles physics, LARGE ELECTRON POSITRON COLLIDER, PARTICLE PHYSICS, Física nuclear, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Particle Physics - Experiment
Abstract: The lifetimes of charged and neutral B hadrons have been measured using data collected by the DELPHI experiment at LEP between 1991 and 1993. B hadrons are tagged as jets with a secondary vertex and the charge of the B candidate is taken to be the sum of the charges of the particles in the secondary vertex. Approximately 1,434,000 multihadronic \PZz decays yielded 1817 B hadron candidates. The B purity was estimated to be around 99.1\pm0.3\%, and 83\% (70\%) of the events measured as neutral (charged) came from neutral (charged) B's. The mean lifetimes of charged and neutral B hadrons were found to be \TAUBC\pm\ERRBC\;(stat.)\pm\SYSBC\;(syst.)~ps and \TAUBN\pm\ERRBN\;(stat.)\pm\SYSBN\;(syst.)~ps respectively. The ratio of their lifetimes, \tau_{charged}/\tau_{neutral}, was \RAT10^{\ERRCNP}_{\ERRCNM}\;(stat.)\pm\SYSR10\;(syst.). By making assumptions about the \PsB and \PlB states, the \PbBp and \PbBz meson lifetimes were determined to be \tau_{{\rm B}^+}=\TAUBP\pm\ERRBP\;(stat.)\pm\ SYSBP\;(syst.)~ps and \tau_{{\rm B}^0}=\TAUBZ\pm\ERRBZ\;(stat.)\pm \SYSBZ\;(syst.)~ps and the ratio of their lifetimes was:\\ \tau_{{\rm B}^+}/\tau_{{\rm B}^0} = \RATPZ^{\ERRPZP}_{\ERRPZM}\; \pm \SYSRP . The mean \PbB lifetime was also deduced to be = 1.64\pm0.06\; (\mbox{ stat.}) \pm\SYSB\;(\mbox{ syst.}) \; \mbox{ ps.}
Published: 1995
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