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1. Anti-Gephyrin antibodies: A novel specificity in patients with systemic sclerosis and lower bowel dysfunction

Author: McMahan, ZH, primary, Kulkarni, S, additional, Andrade, F, additional, Perin, J, additional, Zhang, C, additional, Hooper, JE, additional, Wigley, FM, additional, Rosen, A, additional, Pasricha, PJ, additional, and Casciola-Rosen, L, additional
Published: 2022
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2. Charged particle multiplicity distributions for fixed number of jets inZ 0 hadronic decays

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Aleseev, Gd, Allen, P., Almehed, S., Alvsvaag, Sj, Amaldi, U., Anassontzis, Eg, Andreazza, A., Antilogus, P., Apel, Wd, Apsimon, Rj, Asman, B., Augustin, Je, Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, G., Bardin, Dy, Baroncelli, A., Barring, O., Barrio, Ja, Bartl, W., Bates, Mj, Battaglia, M., Baubillier, M., Becks, Kh, Beeston, Cj, Begalli, M., Beilliere, P., Belokopytov, Y., Beltran, P., Benedic, D., Berrgren, M., Bertrand, D., Bianchi, F., Bilenky, Ms, Billoir, P., Bjarne, J., Bloch, D., Blyth, S., Bocci, V., Bogolubov, Pn, Bolognese, T., Bonesini, M., Bonivento, W., Booth, Psl, Borgeaud, P., Borisov, G., Borner, H., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, Tjv, Bozzo, M., Braibant, S., Branchini, P., Brand, Kd, Brenner, Ra, Briand, H., Bricman, C., Brown, Rca, Brummer, N., Brunet, Jm, Bugge, L., Buran, T., Burmeister, H., Buytaert, Jama, Caccia, M., Calvi, M., Rozas, Ajc, Camporesi, T., Canale, V., Cao, F., Carena, F., Carroll, L., Caso, C., Castelli, E., Castillo, Mv, Gimenez, Mvc, Cattai, A., Cavallo, Fr, Cerrito, L., Chabaud, V., Chan, A., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, Ga, Chevalier, L., Chliapnikov, P., Chorowicz, V., Chrin, Jtm, Cirio, R., Clara, Mp, Collins, P., Contreras, Jl, Contri, R., Cortina, E., Cosme, G., Couchot, F., Crawley, Hb, Crennell, D., Crosetti, G., Crozon, M., Maestro, Jc, Czellar, S., Dagoret, S., Dahljensen, E., Dalmagne, B., Dam, M., Damgaard, G., Darbo, G., Daubie, E., Daum, A., Dauncey, Pd, Davenport, M., David, P., Dasilva, W., Defoix, C., Delikaris, D., Dellariccia, Ba, Delorme, S., Delpierre, P., Demaria, N., Deangelis, A., Debeer, M., Deboek, H., Deboer, W., Declercq, C., Laso, Mdmd, Degroot, N., Delavaissiere, C., Delotto, B., Demin, A., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Dris, M., Dufour, Y., Eek, Lo, Eerola, Pam, Ehret, R., Ekelof, T., Ekspong, G., Peisert, Ae, Engel, Jp, Fassouliotis, D., Fearnley, Ta, Feindt, M., Fenyuk, A., Alonso, Mf, Ferrer, A., Filippas, Ta, Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Forbes, Kaj, Franek, B., Frenkiel, P., Fries, Dc, Frodesen, Ag, Fruhwirth, R., Fuldaquenzer, F., Furnival, K., Furstenau, H., Fuster, J., Galeazzi, G., Gamba, D., Carcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, En, Gazis, Jp, Gerber, Jp, Giacomelli, P., Gokieli, R., Golob, B., Golovatyuk, Vm, Cadenas, Jjgy, Goobar, A., Gopal, G., Gorski, M., Gracco, V., Grant, A., Grard, F., Graziani, E., Grosdidier, G., Gross, E., Grossewiesmann, P., Grossetete, B., Gumenyuk, S., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Haider, S., Hajduk, Z., Hakansson, A., Hallgren, A., Hamacher, K., Demoncenault, Gh, Hao, W., Harris, Fj, Henkes, T., Hernandez, Jj, Herquet, P., Herr, H., Hessing, Tl, Hietanen, I., Higgins, Co, Higon, E., Hilke, Hj, Hodgson, Sd, Hofmokl, T., Holmes, R., Holmgren, So, Holthuizen, D., Honore, Pf, Hooper, Je, Houlden, M., Hrubec, J., Hulth, Po, Hultqvist, K., Ioannou, P., Isenhower, D., Iversen, Ps, Jackson, Jn, Jalocha, P., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, Ek, Johnson, D., Jonker, M., Lonsson, L., Juillot, P., Kalkanis, G., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, Ec, Karanen, R., Kesteman, J., Khomenko, Ba, Khovanski, Nn, King, B., Kjaer, Nj, Klein, H., Klempt, W., Klovning, A., Kluit, P., Kochmehrin, A., Koehne, Jh, Koene, B., Kokkinias, P., Kopf, M., Korcyl, K., Korytov, Av, Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, Ph, Krolikowski, J., Kronkvist, I., Krstic, J., Krueneimarquis, U., Krupinski, W., Kulka, K., Kurvinen, K., Lacasta, C., Lambropoulos, C., Lamsa, Jw, Lanceri, L., Lapin, V., Laugier, Jp, Lauhakangas, R., Leder, G., Ledroit, F., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Levy, Jm, Lieb, E., Liko, D., Lillethun, E., Lindgren, J., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, Jg, Lopezfernandez, A., Aguera, Mal, Los, M., Loukas, D., Lozano, Jj, Lutz, P., Lyons, L., Maehlum, G., Maillard, I., Maltezos, A., Mandl, F., Marco, J., Margoni, M., Marin, Jc, Markou, A., Maron, T., Marti, S., Mathis, L., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Meola, G., Meroni, C., Meyer, Wt, Michelotto, M., Mikulec, I., Mitaroff, Wa, Mitselmakher, Gv, Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., MONGE, MR, Morettini, P., Mueller, H., Murray, Wj, Muryn, B., Myatt, G., Naraghi, F., Navarria, Fl, Negri, P., Nielsen, Bs, Nijjhar, B., Nikolaenko, V., Nilsen, Pes, Niss, P., Obraztsov, V., Olshevski, Ag, Orava, R., Ostankov, A., Osterberg, K., Ouraou, A., Paganoni, M., Pain, R., Palka, H., Papadopoulou, Td, Pape, L., Passeri, A., Pegoraro, M., Pennanen, J., Perevozchikov, V., Pernicka, M., Perrotta, A., Petrolini, A., Pettersen, Te, Pierre, F., Pimenta, M., Pingot, O., Pol, Me, Polok, G., Poropat, P., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Ratoff, Pn, Read, Al, Redaelli, Ng, Regler, M., Reid, D., Renton, Pb, Resvanis, Lk, Richard, F., Richardson, M., Ridky, J., Rinaudo, G., Roditi, I., Romero, A., Roncagliolo, I., Ronchese, P., Ronnqvist, C., Rosenberg, Ei, Rossi, S., Rossi, U., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmann, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schael, S., Schneider, H., Schyns, Mae, Sciolla, G., Scuri, F., Segar, Am, Sekulin, R., Sessa, M., Sette, G., Seufert, R., Shellard, Rc, Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, An, Skaali, Tb, Skjevling, G., Smadja, G., Smith, Gr, Sosnowski, R., Spassoff, Ts, Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavropoulos, G., Stichelbaut, F., Stocchi, A., Strauss, J., Straver, J., Strub, R., Szczekowski, M., Szeptycka, M., Szymanski, P., Tabarelli, T., Tavernier, S., Tchikilev, O., Theodosiou, Ge, Tilquin, A., Timmermans, J., Timofeev, Vg, Tkatchev, Lg, Todorov, T., Toet, Dz, Toker, O., Torassa, E., Tortora, L., Trainor, Mt, Treille, D., Trevisan, U., Trischuk, W., Tristram, G., Troncon, C., Tsirou, A., Tsyganov, En, Turala, M., Turluer, Ml, Tuuva, T., Tyapkin, Ia, Tyndel, M., Tzamarias, S., Ueberschaer, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Ferrer, Jav, Vandervelde, C., Vanapeldoorn, Gw, Vandam, P., Vandoninck, Wk, Varela, J., Pedro Vaz, Vegni, G., Ventura, L., Venus, W., Verbeure, F., Vertogradov, Ls, Vilanova, D., Vitale, L., Vlasov, E., Vodopyanov, As, Vollmer, M., Volponi, S., Voulgaris, G., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wayne, M., Wehr, A., Weierstall, M., Weilhammer, P., Werner, J., Wetherell, Am, Wickens, Jh, Wikne, J., Wilkinson, Gr, Williams, Wsc, Winter, M., Wormald, D., Wormser, G., Woschnagg, K., Yamdagni, N., Yepes, P., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zhang, G., Zimin, Ni, Zito, M., Zuberi, R., Funchal, Rz, Zumerle, G., Zuniga, J., 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 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 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, 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), 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), 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: Quark, COLLISIONS, Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, Astrophysics::High Energy Astrophysical Phenomena, Hadron, PETRA ENERGIES, INTERVALS, 01 natural sciences, 250 GEV/C, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, 010306 general physics, Parton shower, RAPIDITY DEPENDENCE, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, QUARK, Multiplicity (mathematics), GLUON JETS, Charged particle, Gluon, FRAGMENTATION, Physique des particules élémentaires, High Energy Physics::Experiment, Particle Physics - Experiment, Color charge
Abstract: The multiplicity distributions of charged particles in full phase space and in restricted rapidity intervals for events with a fixed number of jets measured by the DELPHI detector are presented. The data are well reproduced by the Lund Parton Shower model and can also be well described by fitted negative binomial distributions. The properties of these distributions in terms of the clan model are discussed. In symmetric 3-jet events the candidate gluon jet is found not to be significantly different in average multiplicity than the mean of the other two jets, thus supporting previous results of the HRS and OPAL experiments. Similar results hold for events generated according to the LUND PS and to the HERWIG models, when the jets are defined by the JADE jet finding algorithm. The method seems to be insensitive for measuring the color charge ratio between gluons and quarks. © 1992 Springer-Verlag., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1992
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3. A SEARCH FOR LEPTON FLAVOR VIOLATION IN Z0 DECAYS

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G and BARDIN, DY BARKER, G BARONCELLI, A BARRING, O BARRIO, JA and BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y and BELTRAN, P BENEDIC, D BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J and BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P and BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S and BOTNER, O BOUDINOV, E BOUQUET, B BOURDARIOS, C and BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD and BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, R and CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L and CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G and CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E and DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J and DASILVA, W DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P DEMARIA, N DERKAOUI, J DEANGELIS, A DEBOECK, H and DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F and EEK, LO EROLA, PAM EHRET, R EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP ERSHAIDAT, N FASSOULIOTIS, D and FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FONTANELLI, F FORBES, KAJ and FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC and FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K and FURSTENAU, H FUSTER, J GAMBA, D GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUY, J HAEDINGER, U and HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A and HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HUET, K HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G and JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M and JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN and KING, B KJAER, NJ KLEIN, H KLEMPT, W KLOVNING, A and KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KOPF, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V and KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J and KRONKVIST, I KRUENERMARQUIS, U KUCEWICZ, W KULKA, K and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E LIKO, D and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F and MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MYATT, G NAVARRIA, FL NEGRI, P and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P and OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H and PAPADOPOULOU, TD PAPE, L PASSERI, A PEGORARO, M and PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PETRIDOU, C PETROLINI, A PETROVYKH, L PETTERSEN, TE and PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S POL, ME and POLOK, G POROPAT, P PRIVITERA, P PULLIA, A and RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G and RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P and RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U ROSSO, E and ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V and RUIZ, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J and SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHULZE, B and SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R and SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I and SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAPNES, S STAVROPOULOS, G STICHELBAUT, F STOCCHI, A and STRAUSS, J STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L and TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML TUUVA, T and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERTOGRADOV, LS VILANOVA, D VINCENT, P and VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P and WERNER, J WETHERELL, AM WICKENS, JH WILKINSON, GR and WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Abstract: A search for lepton flavour violation through the decays Z0 –> emu, etau and mutau was made with the DELPHI detector at LEP, using a sample corresponding to an integrated luminosity of 11.2 pb-1. The number of candidates was consistent with the estimated background. The upper limit on the branching ratio (at 95% confidence level) for Z0 –> emu was 3.2 x 10(-5), for Z0 –> etau was 10.8 x 10(-5) and for Z0 –> mutau was 13.5 x 10(-5).
Published: 1993

4. MEASUREMENT OF INCLUSIVE PRODUCTION OF LIGHT MESON RESONANCES IN HADRONIC DECAYS OF THE Z0

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G and BARDIN, DY BARKER, G BARONCELLI, A BARRING, O BARRIO, JA and BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y and BELTRAN, P BENEDIC, D BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J and BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P and BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S and BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV and BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA and BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA and CACCIA, M CALVI, M ROZAS, AJC CAMPION, R CAMPORESI, T and CANALE, V CAO, F CARENA, F CARROLL, L CASO, C and GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V and CHAN, A CHAPKIN, M CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CLARA, MP and COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G and CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUM, A and DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J DASILVA, W and DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P and DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y DUPONT, F EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP ERSHAIDAT, N and FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A and FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A and GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F and GRAZIANI, E GROSDIDIER, G GROSS, E GROSSEWIESMANN, P and GROSSETETE, B GUY, J HAEDINGER, U HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T and HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIETANEN, I and HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF and HOOPER, JE HOULDEN, M HRUBEC, J HUET, K HULTH, PO and HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS and JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L and JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M and KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R and KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORCYL, K and KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J KRONKVIST, I KRUENERMARQUIS, U KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T and LEVY, JM LIEB, E LIKO, D LINDGREN, J LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D and LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MALTEZOS, A MANDL, F MARCO, J MARGONI, M MARIN, JC and MARKOU, A MARON, T MARTI, S MATHIS, L MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MYATT, G NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V NILSEN, PES NISS, P OBRAZTSOV, V and OLSHEVSKI, AG ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD and PAPE, L PASSERI, A PEGORARO, M PENNANEN, J and PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PETRIDOU, C and PETROLINI, A PETTERSEN, TE PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S POL, ME POLOK, G POROPAT, P and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S and ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHULZE, B SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SKJEVLING, G SMADJA, G SMIRNOV, N SMITH, GR and SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R and SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T and TCHIKILEV, O THEODOSIOU, GE TILQUIN, A TIMMERMANS, J and TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O and TOMARADZE, A TORASSA, E TORTORA, L TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A and TSYGANOV, EN TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O and UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M and VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERTOGRADOV, LS VILANOVA, D VINCENT, P and VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P and WERNER, J WETHERELL, AM WICKENS, JH WILKINSON, GR and WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Abstract: A study of inclusive production of the meson resonances rho0, K*0 (892), f0(975) and f2(1270) in hadronic decays of the Z0 is presented. The measured mean meson multiplicity per hadronic event is 0.83 +/- 0.14 for the rho0, 0.64 +/- 0.24 for the K*0(892). 0.10 +/- 0.04 for the f0(975) in the momentum range p > 0.05p(beam) (x(p) > 0.05) and 0.11 +/- 0.05 for the f2 (1270) for x(p) > 0. 1. These values and the corresponding differential cross sections (1/sigma(hadr)) dsigma/dx(p) for the vector mesons are in good agreement with the predictions of the JETSET 7.3 PS and HFRWIG 5.4 models. The f2 (1270) production is overestimated by HERWIG but its x(p)-shape is correctly reproduced. The measured ratios of the production cross sections sigma (f2(1270))/sigma(rho0) = 0.22 +/- 0.08 and sigma(f2(1270))/sigma(f0(975)) = 3(-1)+7 for x(p) > 0.1 are consistent with the results obtained in hadronic reactions.
Published: 1993

5. MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S and ALVSVAAG, SJ AMALDI, U ANDREAZZA, A ANTILOGUS, P and APEL, WD APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A 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 BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHAPKIN, M and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DAUBIE, E DAUM, A and DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP ERSHAIDAT, N FASSOULIOTIS, D and FEINDT, M FENYUK, A ALONSO, MF FERRER, A FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F and FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P and FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F and FURNIVAL, K FURSTENAU, H FUSTER, J GAMBA, D GARCIA, C and GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B and GOLOVATYUK, VM GOMEZ, JJ CADENAS, Y GOPAL, G GORN, L and GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E and GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B and GUY, J HAEDINGER, U HAHN, F HAHN, M HAIDER, S and HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HAO, W HARRIS, FJ HEDBERG, V HENKES, T and HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL and HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD and HOFMOKL, T HOLMGREN, SO HOLTHUIZEN, D HONORE, PF and HOOPER, JE HOULDEN, M HRUBEC, J HUET, K HULTH, PO and HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK and JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KORCYL, K KORYTOV, AV and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUENERMARQUIS, U and KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T and LEVY, JM LIEB, E LIKO, D LINDGREN, J LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D and LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MAIO, A MALTEZOS, A MANDL, F MARCO, J MARGONI, M and MARIN, JC MARKOU, A MARON, T MARTI, S MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MYATT, G NAVARRIA, FL NEGRI, P NICOLAIDOU, R NIELSEN, BS and NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P and NOMEROTSKI, A OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R and OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R and PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H and PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S PODOBRIN, O and POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PRIVITERA, P and PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A and SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC and SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SKJEVLING, G SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAPNES, S and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E and TORTORA, L TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML and TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E and FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P and VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS and VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOUTILAINEN, M VRBA, V WAHLEN, H and WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P and WERNER, J WETHERELL, AM WICKENS, JH WILKINSON, GR and WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract: Evidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are LAMBDA(b), the observed signal of (LAMBDAl- + LAMBDAl+BAR) pairs, where l is a high transverse momentum lepton in the same jet as the LAMBDA, leads to a production rate: f (b –> LAMBDA(b)) x Br(LAMBDA(b) –> LAMBDAlnuX) = (0.41 +/- 0.13 +/- 0.09)%. Using a sample of 18 reconstructed LAMBDA(b) decay vertices, the lifetime is determined to be tau(LAMBDA(b)) = ( 1.04(-0.38)+0.48 +/- 0.10) ps.
Published: 1993

6. A MEASUREMENT OF THE TAU LIFETIME

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSAN, R and ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P and APEL, WD APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A 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 BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L GIMENEZ, MVC CATTAI, A CAVALLO, FR and CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P and CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM and CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J and DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD and DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A and DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y DUPONT, F EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP ERSHAIDAT, N and FASSOULIOTIS, D FEINDT, M FENYUK, A ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S and FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A and GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F and GRAZIANI, E GROSDIDIER, G GROSS, E GROSSEWIESMANN, P and GROSSETETE, B GUMENYUK, S GUY, J HAEDINGER, U HAHN, F and HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ and HEDBERG, V HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HUET, K HULTH, PO HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P and KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KORATZINOS, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V and KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J and KRONKVIST, I KRUENERMARQUIS, U KUCEWICZ, W KULKA, K and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E LIKO, D and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MYATT, G NAVARRIA, FL NEGRI, P and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES and NISS, P OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R and PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PETTERSEN, TE and PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P PRIVITERA, P PULLIA, A and RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB and RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P and RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U ROSSO, E and ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V and RUIZ, A RYBIN, A SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H and SCHULZE, B SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM and SEITZ, A SEKULIN, R SESSA, M SETTE, G SEUFERT, R and SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S and SIMONETTO, F SISAKIAN, AN SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAPNES, S and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E and TORTORA, L TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML and TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E and FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P and VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS and VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V and WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A and WEIERSTALL, M WEILHAMMER, P WERNER, J WETHERELL, AM and WICKENS, JH WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEYGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R and FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment
Abstract: The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three measurements using one prong decays are combined, accounting for correlations, resulting in tau(tau) = 298 +/- 7 (stat.) +/- 4 (syst.) fs while the decay length distribution of three prong decays gives tau(tau) = 298 +/- 13 (stat.) +/- 5 (syst.) fs. The combined result is tau(tau) = 298 +/- 7 fs. The ratio of the Fermi coupling constant from tau decay relative to that from muon decay is found to be 0.985 +/- 0.013, compatible with lepton universality.
Published: 1993

7. A MEASUREMENT OF THE MEAN LIFETIMES OF CHARGED AND NEUTRAL B-HADRONS

Author: ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I and ALEKSAN, R ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S and ALVSVAAG, SJ AMALDI, U ANDREAZZA, A ANTILOGUS, P and APEL, WD APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE and AUGUSTINUS, A 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 BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P and CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM and COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G and CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DAUBIE, E DAUM, A DAUNCEY, PD and DAVENPORT, M DAVID, P DAVIES, J DASILVA, W DEFOIX, C and DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H and DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP ERSHAIDAT, N FALALEEV, V and FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F and FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P and FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F and FURNIVAL, K FURSTENAU, H FUSTER, J GAMBA, D GARCIA, C and GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B and GOLOVATYUK, VM CADENAS, JJGY GOPAL, G GORN, L GORSKI, M and GRACCO, V GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B GUY, J and HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAKANSSON, A and HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HEDBERG, V HENKES, T HERNANDEZ, JJ HERQUET, P and HERR, H HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HUET, K HULTH, PO HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P and KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KORATZINOS, M KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C and KOUZNETSOV, O KRAMER, PH KREUTER, C KROLIKOWSKI, J and KRONKVIST, I KRUENERMARQUIS, U KRUPINSKI, W KULKA, K and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E LIKO, D and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARON, T MARTI, S MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NAVARRIA, FL and NEGRI, P NICOLAIDOU, R NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V NILSEN, PES NISS, P NOMEROTSKI, A and OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H and PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S PODOBRIN, O POL, ME and POLOK, G POROPAT, P POZDNIAKOV, V PRIVITERA, P PULLIA, A and RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REBECCHI, P REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSO, E and ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H and SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A and SEKULIN, R SESSA, M SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SKJEVLING, G SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR and SOSNOWSKI, R SOUZASANTOS, D SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAPNES, S and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E and TORTORA, L TRIELLE, D TRISCHUK, W TRISTRAM, G TRONCON, C and TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YAMDAGNI, N and YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M and ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract: The decays of B-hadrons have been reconstructed using the charged particles recorded in the DELPHI silicon microstrip detector. The sum of the charges of the secondaries determines the charge of the B-hadron parent. Some 232 114 multihadronic Z0 decays recorded during the 1991 run of LEP at centre-of-mass energies between 88.2 GeV and 94.2 GeV yield 253 B-hadron candidates with well-measured charge. From these the mean lifetimes of neutral and charged B-hadrons are found to be 1.44 +/- 0.21(stat.) +/- 0.14(syst.) ps and 1.56 +/- 0.19(stat.) +/- 0.13(syst.) ps respectively. The ratio of their lifetimes is 1.09(-0.23)+0.28 (Stat.) +/- 0.11 (syst.). Under some assumptions on the abundance and lifetime of the LAMBDA(b)0 and B(s)0 states, the B0 and B+ lifetimes are inferred.
Published: 1993

8. DETERMINATION OF ALPHA-S FROM THE SCALING VIOLATION IN THE FRAGMENTATION FUNCTIONS IN E+E- ANNIHILATION

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSAN, R and ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ and AMALDI, U ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R and BARBIELLINI, G BARDIN, DY BARKER, GI BARONCELLI, A and BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L GIMENEZ, MVC CATTAI, A CAVALLO, FR and CERRITO, L CHABAUD, V CHAN, A CHAPKIN, M and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J and DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD and DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A and DIJKSTRA, H DICIACCIO, L DOLBEAU, J DONSZELMANN, M and DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y and DUPONT, F EDSALL, D EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP ERSHAIDAT, N and FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A and FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GERBER, JP GERDYUKOV, L and GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM and CADENAS, JJGY GOPAL, G GORN, L GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUY, J HAEDINGER, U and HAHN, F HAHN, M HAIDER, S HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HEDBERG, V HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMGREN, SO HOLTHUIZEN, D and HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HUET, K and HULTH, PO HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P and KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M and KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R and KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KORYTOV, AV and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUENERMARQUIS, U and KRUPINSKI, W KULKA, K KURVINEN, K KUSSMAUL, T LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LESIAK, T LEVY, JM LIEB, E LIKO, D LINDGREN, J and LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M and LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G and MAILLARD, J MAIO, A MALTEZOS, A MANDL, F MARCO, J and MARGONI, M MARIN, JC MARKOU, A MARON, T MARTI, S and MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M and MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C and MEYER, WT MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R and MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MURYN, B MYATT, G NAVARRIA, FL NEGRI, P NICOLAIDOU, R NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES and NISS, P NOMEROTSKI, A OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F and PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A and PETROVYKH, L PIERRE, F PIMENTA, M PINGOT, O and PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P and POZDNIAKOV, V PRIVITERA, P PULLIA, A RADOJICIC, D and RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REBECCHI, P and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G and RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P and RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSO, E ROUDEAU, P and ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A and RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J and SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE and SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A SEKULIN, R and SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I and SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SKJEVLING, G SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R and STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TABARELLI, T TCHIKILEV, O THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E TORTORA, L TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C and TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YAMDAGNI, N and YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M and ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: A determination of the hadronic fragmentation functions of the Z0 boson is presented from a study of the inclusive hadron production with the DELPHI detector at LEP. These fragmentation functions were compared with the ones at lower energies, thus covering data in a large kinematic range: 196 less-than-or-equal-to Q2 less-than-or-equal-to 8312 GeV2 and x (= p(h)/E(beam)) > 0.08. A large scaling violation was observed, which was used to extract the strong coupling constant in second order QCD: alpha(s)(M(Z)) = 0.118 +/- 0.005. The corresponding QCD scale for five quark flavours is: LAMBDA(MS)(5)BAR = 230 +/- 60 MeV.
Published: 1993

9. Search For Z(0) Decays To 2 Leptons and A Charged-particle Antiparticle Pair

Author: Abreu, P, Adam, W, Adye, T, Agasi, E, Aleksan, R, Alekseev, Gd, Algeri, A, Allen, P, Almehed, S, Alvsvaag, Sj, Amaldi, U, Andreazza, A, Antilogus, P, Apel, Wd, Apsimon, Rj, Arnoud, Y, Asman, B, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barate, R, Barbiellini, G, Bardin, Dy, Barker, Gj, Baroncelli, A, Barring, O, Barrio, Ja, Bartl, W, Bates, Mj, Battaglia, M, Baubillier, M, Becks, Kh, Beeston, Cj, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Benvenuti, Ac, Berggren, M, Bertrand, D, Bianchi, F, Bilenky, Ms, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bocci, V, Bogolubov, Pn, Bolognese, T, Bonesini, M, Bonivento, W, Booth, Psl, Borisov, G, Borner, H, Bosio, C, Bostjancic, B, Bosworth, S, Botner, O, Boudinov, E, Bouquet, B, Bourdarios, C, Bowcock, Tjv, Bozzo, M, Braibant, S, Branchini, P, Brand, Kd, Brenner, Ra, Briand, H, Bricman, C, Brown, Rca, Brummer, N, Brunet, Jm, Bugge, L, Buran, T, Burmeister, H, Buytaert, Jama, Caccia, M, Calvi, M, Rozas, Ajc, Campion, R, Camporesi, T, Canale, V, Cao, F, Carena, F, Carroll, L, Caso, C, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chabaud, V, Chan, A, Charpentier, P, Chaussard, L, Chauveau, J, Checchia, P, Chelkov, Ga, Chevalier, L, Chliapnikov, P, Chorowicz, V, Chrin, Jtm, Collins, P, Contreras, Jl, Contri, R, Cortina, E, Cosme, G, Couchot, F, Crawley, Hb, Crennell, D, Crosetti, G, Crozon, M, Maestro, Jc, Czellar, S, Dahljensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Daum, A, Dauncey, Pd, Davenport, M, David, P, Davies, J, Dasilva, W, Defoix, C, Delpierre, P, Demaria, N, Deangelis, A, Deboeck, H, Deboer, W, Declercq, C, Laso, Mdmd, Degroot, N, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Dijkstra, H, Diciaccio, L, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dufour, Y, Dupont, F, Edsall, D, Eek, Lo, Eerola, Pam, Ehret, R, Ekelof, T, Ekspong, G, Peisert, Ae, Engel, Jp, Ershaidat, N, Fassouliotis, D, Feindt, M, Alonso, Mf, Ferrer, A, Filippas, Ta, Firestone, A, Foeth, H, Fokitis, E, Fontanelli, F, Forbes, Kaj, Fousset, Jl, Francon, S, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Furnival, K, Furstenau, H, Fuster, J, Gamba, D, Garcia, C, Garcia, J, Gaspar, C, Gasparini, U, Gavillet, P, Gazis, En, Gerber, Jp, Giacomelli, P, Gokieli, R, Golob, B, Golovatyuk, Vm, Gomez, Jj, Cadenas, Y, Gopal, G, Gorn, L, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Grosdidier, G, Gross, E, Grossewiesmann, P, Grossetete, B, Gumenyuk, S, Guy, J, Haedinger, U, Hahn, F, Hahn, M, Haider, S, Hakansson, A, Hallgren, A, Hamacher, K, Demonchenault, Gh, Hao, W, Harris, Fj, Hedberg, V, Henkes, T, Hernandez, Jj, Herquet, P, Herr, H, Hessing, Tl, Hietanen, I, Higgins, Co, Higon, E, Hilke, Hj, Hodgson, Sd, Hofmokl, T, Holmgren, So, Holthuizen, D, Honore, Pf, Hooper, Je, Houlden, M, Hrubec, J, Huet, K, Hulth, Po, Hultqvist, K, Ioannou, P, Iversen, Ps, Jackson, Jn, Jalocha, P, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, Kalmus, G, Kapusta, F, Karlsson, M, Karvelas, E, Katsanevas, S, Katsoufis, Ec, Keranen, R, Kesteman, J, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klovning, A, Kluit, P, Kochmehrin, A, Koehne, Jh, Koene, B, Kokkinias, P, Koratzinos, M, Korytov, Av, Kostioukhine, V, Kourkoumelis, C, Kouznetsov, O, Kramer, Ph, Kreuter, C, Krolikowski, J, Kronkvist, I, Kruenermarquis, U, Krupinski, W, Kulka, K, Kurvinen, K, Lacasta, C, Lambropoulos, C, Lamsa, Jw, Lanceri, L, Lapin, V, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Leitner, R, Lemoigne, Y, Lemonne, J, Lenzen, G, Lepeltier, V, Lesiak, T, Levy, Jm, Lieb, E, Liko, D, Lindgren, J, Lindner, R, Lipniacka, A, Lippi, I, Loerstad, B, Lokajicek, M, Loken, Jg, Lopezfernandez, A, Aguera, Mal, Los, M, Loukas, D, Lozano, Jj, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maio, A, Maltezos, A, Mandl, F, Marco, J, Margoni, M, Marin, Jc, Markou, A, Maron, T, Marti, S, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Meola, G, Meroni, C, Meyer, Wt, Michelotto, M, Mikulec, I, Mirabito, L, Mitaroff, Wa, Mitselmakher, Gv, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Murray, Wj, Muryn, B, Myatt, G, Navarria, Fl, Negri, P, Nicolaidou, R, Nielsen, Bs, Nijjhar, B, Nikolaenko, V, Nilsen, Pes, Niss, P, Nomerotski, A, Obraztsov, V, Olshevski, Ag, Orava, R, Ostankov, A, Osterberg, K, Ouraou, A, Paganoni, M, Pain, R, Palka, H, Papadopoulou, Td, Pape, L, Parodi, F, Passeri, A, Pegoraro, M, Pennanen, J, Peralta, L, Perevozchikov, V, Pernegger, H, Pernicka, M, Perrotta, A, Petridou, C, Petrolini, A, Petrovich, L, Pierre, F, Pimenta, M, Pingot, O, Plaszczynski, S, Podobrin, O, Pol, Me, Polok, G, Poropat, P, Pozdniakov, V, Privitera, P, Pullia, A, Radojicic, D, Ragazzi, S, Rahmani, H, Ratoff, Pn, Read, Al, Rebecchi, P, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, Ei, Rossi, S, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmannkleider, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Sajot, G, Salt, J, Sanchez, J, Sannino, M, Schael, S, Schneider, H, Schyns, Mae, Sciolla, G, Scuri, Fabrizio, Segar, Am, Seitz, A, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, Rc, Siccama, I, Siegrist, P, Simonetti, S, Simonetto, F, Sisakian, An, Skjevling, G, Smadja, G, Smirnova, O, Smith, Gr, Sosnowski, R, Souzasantos, D, Spassoff, Ts, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stapnes, S, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Straver, J, Strub, R, Stugu, B, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tchikilev, O, Theodosiou, Ge, Tilquin, A, Timmermans, J, Timofeev, Vg, Tkatchev, Lg, Todorov, T, Toet, Dz, Toker, O, Tome, B, Torassa, E, Tortora, L, Treille, D, Trevisan, U, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, En, Turala, M, Turluer, Ml, Tuuva, T, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Ferrer, Jav, Vandervelde, C, Vanapeldoorn, Gw, Vandam, P, Vanderheijden, M, Vandoninck, Wk, Vaz, P, Vegni, G, Ventura, L, Venus, W, Verbeure, F, Verlato, M, Vertogradov, Ls, Vilanova, D, Vincent, P, Vitale, L, Vlasov, E, Vodopyanov, As, Vollmer, M, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wehr, A, Weierstall, M, Weilhammer, P, Werner, J, Wetherell, Am, Wickens, Jh, Wilkinson, Gr, Williams, Wsc, Winter, M, Witek, M, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zavrtanik, D, Zevgolatakos, E, Zhang, G, Zimin, Ni, Zito, M, Zuberi, R, Funchal, Rz, Zumerle, G, and Zuniga, J.
Subjects: MU+MU, E+E, ENERGIES, MONTE-CARLO SIMULATION, RADIATIVE-CORRECTIONS, FINAL-STATES, Z0 DECAYS, High Energy Physics::Experiment, Computer Science::Information Theory
Abstract: Based on a sample equivalent to 365 000 hadronic Z0 decays, the search in DELPHI data for pairs of leptons accompanied by a pair of charged particles is described. A total of 11 events were found in the electron channel, 9 in the muon channel and 7 in the tau channel. Results on lepton pairs with a radiated photon are also presented. The data from all channels are compatible with the expectations from standard processes. However, one event was found in the tau channel with an unusually high mass of the charged particle pair.
Published: 1993

10. DETERMINATION OF ALPHA(S) FOR B-QUARKS AT THE Z(0) RESONANCE

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSAN, R and ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ and AMALDI, U ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A 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 BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P and CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM and COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G and CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DAUBIE, E DAUM, A DAUNCEY, PD and DAVENPORT, M DAVID, P DAVIES, J DASILVA, W DEFOIX, C and DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H and DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D and EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP ERSHAIDAT, N FASSOULIOTIS, D and FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FONTANELLI, F FORBES, KAJ and FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC and FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K and FURSTENAU, H FUSTER, J GAMBA, D GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM and CADENAS, JJGY GOPAL, G GORSKI, M GRACCO, V GRANT, A and GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUMENYUK, S GUY, J and HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAKANSSON, A and HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HEDBERG, V HENKES, T HERNANDEZ, JJ HERQUET, P and HERR, H HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M and HRUBEC, J HUET, K HULTH, PO HULTQVIST, K IOANNOU, P and IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M and JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P and KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KORATZINOS, M KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C and KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J KRONKVIST, I and KRUENERMARQUIS, U KRUPINSKI, W KULKA, K KURVINEN, K and LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LESIAK, T LEVY, JM LIEB, E LIKO, D LINDGREN, J and LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M and LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G and MAILLARD, J MAIO, A MALTEZOS, A MANDL, F MARCO, J and MARGONI, M MARIN, JC MARKOU, A MARON, T MARTI, S and MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G and MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NAVARRIA, FL and NEGRI, P NICOLAIDOU, R NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V NILSEN, PES NISS, P NOMEROTSKI, A and OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H and PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PETROVYKH, O and PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REBECCHI, P REDAELLI, NG and REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F and RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A and RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI and ROSSI, S ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K SAARIKKO, H and SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M and SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F and SEGAR, AM SEITZ, A SEKULIN, R SESSA, M SETTE, G and SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISAKIAN, AN SKJEVLING, G and SMADJA, G SMIRNOV, N SMIRNOVA, O SMITH, GR SOSNOWSKI, R and SOUZASANTOS, D SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R and STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TABARELLI, T TCHIKILEV, O THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E TORTORA, L TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C and TSIROU, A TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D and VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M and ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The strong coupling constant for b quarks has been determined, and its flavour independence, as predicted by QCD, investigated. The analysis involved events with lepton candidates selected from approximately 356 000 hadronic decays of the Z0, collected by the DELPHI detector at LEP in 1990 and 199 1. A method based on a direct comparison of the three-jet fraction in a b enriched sample, selected by requiring leptons with large momenta and transverse momenta, to that of the entire hadronic sample, illustrated the significant effect of the b quark mass on the multi-jet cross section, and verified the flavour independence of the strong coupling constant to an accuracy of +/- 6%. A second procedure based on a fit to the momentum and transverse momentum spectra of the lepton candidates in both two-jet and three (or more)-jet event samples simultaneously determined the b content in each, and, using second order QCD calculations, gave an absolute measurement of alpha(s) for b quarks of 0. 1 18 +/- 0.004 (stat.) +/- 0.003 (syst.) +/- 0.008 (scale). A comparison with a, for all quark flavours, as measured from the three-jet fraction in all hadronic events, further allowed the coupling strength for b quarks to be expressed in terms relative to that for udsc quarks, thereby cancelling certain common systematic uncertainties, and yielded alpha(s)b/alpha(s)udsc = 1.00 +/- 0.04 (stat.) +/- 0.03 (syst.).
Published: 1993

11. SEARCH FOR Z(0) DECAYS TO 2 LEPTONS AND A CHARGED-PARTICLE ANTIPARTICLE PAIR

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSAN, R and ALEKSEEV, GD ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ and AMALDI, U ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A 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 BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F and BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M and BONIVENTO, W BOOTH, PSL BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUDINOV, E and BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H and BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L and BURAN, T BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CAO, F and CARENA, F CARROLL, L CASO, C GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DAVIES, J and DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD and DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A and DIJKSTRA, H DICIACCIO, L DOLBEAU, J DONSZELMANN, M and DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y and DUPONT, F EDSALL, D EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP ERSHAIDAT, N and FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A and FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U and GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM GOMEZ, JJ CADENAS, Y and GOPAL, G GORN, L GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E GROSSEWIESMANN, P and GROSSETETE, B GUMENYUK, S GUY, J HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HEDBERG, V HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMGREN, SO HOLTHUIZEN, D and HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HUET, K and HULTH, PO HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P and KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M and KARVELAS, E KATSANEVAS, S KATSOUFIS, EC KERANEN, R and KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KORYTOV, AV and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUENERMARQUIS, U and KRUPINSKI, W KULKA, K KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T and LEVY, JM LIEB, E LIKO, D LINDGREN, J LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D and LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MAIO, A MALTEZOS, A MANDL, F MARCO, J MARGONI, M and MARIN, JC MARKOU, A MARON, T MARTI, S MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MURYN, B MYATT, G NAVARRIA, FL NEGRI, P NICOLAIDOU, R and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES and NISS, P NOMEROTSKI, A OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F and PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L and PEREVOZCHIKOV, V PERNEGGER, H PERNICKA, M PERROTTA, A and PETRIDOU, C PETROLINI, A PETROVICH, L PIERRE, F PIMENTA, M PINGOT, O PLASZCZYNSKI, S PODOBRIN, O POL, ME and POLOK, G POROPAT, P POZDNIAKOV, V PRIVITERA, P PULLIA, A and RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REBECCHI, P REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSO, E and ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H and SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A and SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC and SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SKJEVLING, G SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAPNES, S and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TOME, B TORASSA, E and TORTORA, L TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M and TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G and VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW and VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M and VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOUTILAINEN, M VRBA, V and WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M and WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH and WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A and ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E and ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ and ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment, Computer Science::Information Theory
Abstract: Based on a sample equivalent to 365000 hadronic Z0 decays, the search in DELPHI data for pairs of leptons accompanied by a pair of charged particles is described. A total of 11 events were found in the electron channel, 9 in the muon channel and 7 in the tau channel. Results on lepton pairs with a radiated photon are also presented. The data from all channels are compatible with the expectations from standard processes. However, one event was found in the tau channel with an unusually high mass of the charged particle pair.
Published: 1993

12. A MEASUREMENT OF SIN2-THETA-W FROM THE CHARGE ASYMMETRY OF HADRONIC EVENTS AT THE Z0 PEAK

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY and BARONCELLI, A BARRING, O BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V and BOGOLUBOV, PN BOLOGNESE, T BONAPART, M BONESINI, M and BONIVENTO, W BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H and BOSIO, C BOSTJANCIC, B BOTNER, O BOUQUET, B and BOURDARIOS, C BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA and BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC and CAMPION, A CAMPORESI, T CANALE, V CAO, F CARENA, F and CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHAN, A CHARPENTIER, P and CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M and MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E and DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUNCEY, PD DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C and DELIKARIS, D DELORME, S DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y DULINSKI, W EEK, LO EEROLA, PAM EKELOF, T and EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D and FEINDT, M FENYUK, A ALONSO, MF FERRER, A FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FOLEGATI, P and FONTANELLI, F FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K and FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P and GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R and GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A FRARD, F GRAZIANI, E and GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B and GUMENYUK, S GUY, J HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HARRIS, FJ HECK, BW HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HULTH, PO HULTQVIST, K HUSSON, D IOANNOU, P and ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P and JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KAPUSTA, F KARLSSON, M KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLEMPT, W and KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P and KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV and KOSTIUKHIN, V KOSTRIKOV, M KOURKOUMELIS, C KRAMER, PH and KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I KRSTIC, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I LLOSA, R and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ and LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MENICHETTI, E MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V OBRAZTSOV, V OESTERBERG, K OLSHEVSKI, AG and ORAVA, R OSTANKOV, A OURAOU, A PAGANONI, M PAIN, R and PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M and PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PIERRE, F PIMENTA, M PINGOT, O POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, U and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, E SANCHEZ, J SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F SISSAKIAN, AN and SKAALI, TB SKJEVLING, G SMADJA, G SMIRNOV, N SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAVROPOULOS, G STICHELBAUT, F and STOCCHI, A STRAUSS, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L and TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M and TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V and VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VILANOVA, D VITALE, L VLASOV, E and VLASSOPOULOS, S VODOPYANOV, AS VOLLMER, M VOLPONI, S and VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C and WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M and WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D and WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A and ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E and ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ and ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment
Abstract: The weak mixing angle has been measured from the charge asymmetry of hadronic events with two different approaches using the DELPHI detector at LEP. Both methods are based on a momentum-weighted charge sum to determine the jet charge in both event hemispheres. In a data sample of 247 300 multihadronic Z0 decays a charge asymmetry of [Q(F)] - [Q(B)] = -0.0076 +/- 0.0012(stat.) +/- O.0005(exp. syst.) +/- 0.0014(frag.) and a raw forward-backward asymmetry of A(FB)raw = 0.0109 +/- 0.0020(stat.) +/- 0.0010(exp.syst.) +/- 0.0017(frag.) have been measured. This result corresponds to a value of sin2-theta(eff) = 0.2345 +/- 0.0030(exp.) +/- 0.0027(frag.) +/- sin2-theta(MSBAR) = 0.2341 +/- 0.0030(exp.) +/- 0.0027(frag.) and to sin2-theta(w) = 1 -m(w)2/m(z)2 = 0.2299 +/- 0.0030(exp.) +/- 0.0027(frag.) +/- 0.0028 (theor.). The experimental error is the quadratic sum of the statistical and the experimental systematic error and the theoretical error originates from a value of m(t) = 130 +/- 40 GeV/c2 and a range of m(H) from 45 GeV/c2 to 100 GeV/c2.
Published: 1992

13. MEASURING OF THE Z(0)BRANCHING FRACTION TO B QUARK PARIS USING THE BOOSTED SPHERICITY PRODUCT

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY and BARONCELLI, A BARRING, O BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V and BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W and BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOTNER, O BOUQUET, B BOURDARIOS, C and BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD and BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C and CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHAN, A CHAPKIN, M CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHLIAPNIKOV, P CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R COSME, G COUCHOT, F and CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B and DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD and DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C DELIKARIS, D and DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD and DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A and DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H and FOKITIS, E FOLEGATI, P FONTANELLI, F FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GOKIELI, R GOLOVATYUK, VM CADENAS, JJGY and GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A and GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUMENYUK, S GUY, J HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ and HECK, BW HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D and IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M and JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P and KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C and KRAMER, PH KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I and KRSTIC, J KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A LIEB, E LIKO, D and LILLETHUN, E LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B LOKAJICEK, M LOKEN, JG and LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R and MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL and NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V and OBRAZTSOV, V OESTERBERG, K OLSHEVSKI, AG ORAVA, R and OSTANKOV, A OURAOU, A PAGANONI, M PAIN, R PALKA, H and PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PIERRE, F and PIMENTA, M PINGOT, O POL, ME POLOK, G POROPAT, P and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J and RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, U ROSSO, E and ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V RUIZ, A and RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J and SANCHEZ, E SANCHEZ, J SANNINO, M SCHAEL, S and SCHNEIDER, H SCHYNS, MAE SCURI, F SEGAR, AM SEKULIN, R and SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O and THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E and TORTORA, L TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN and TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V and VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VILANOVA, D VISHNEVSKY, N VITALE, L and VLASOV, E VLASSOPOULOS, S VODOPYANOV, AS VOLLMER, M and VOLPONI, S VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H and WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M and WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH and WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R and FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: From a sample of about 120 000 hadronic Z0 decays, using a technique based on a separation of the different event categories in the boosted sphericity product, the fraction of bbBAR decays has been measured to be 0.219 +/- 0.014 (stat) +/- 0.019 (syst). Using the DELPHI determination of the hadronic Z0 width, this corresponds to a partial width GAMMA(bbBAR) = 378 +/- 42 MeV (in good agreement with the standard model prediction of congruent-to 380 N eV). Combining this measurement with the determinations based on events with high p(t) leptons gives an estimate for the branching ratio of b into leptons at LEP of (11.2 +/- 1.2)%, consistent with previous determinations.
Published: 1992

14. EVIDENCE FOR B(S)(0) MESON PRODUCTION IN Z(0) DECAYS

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G and BARDIN, DY BARONCELLI, A BARRING, O BARRIO, JA BARTL, W and BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH and BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y and BELOUS, K BELTRAN, P BENEDIC, D BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P and BJARNE, J BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN and BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL and BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B and BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C and BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD and BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C and GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V and CHAN, A CHAPKIN, M CHARPENTIER, P CHAUSSARD, L and CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G and CROZON, M MAESTRO, JC CZELLAR, S DAHLJENSEN, E and DALMANGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P DASILVA, W and DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W and DECLERCQ, C DELASO, MDM DEGROOT, N DELAVAISSIERE, C and DELOTTO, B DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DZHELYADIN, R EEK, LO EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEINDT, M FENYUK, A ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S and FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUMENYUK, S GUY, J and HAEDINGER, U HAHN, F HAHN, M HAIDER, S HAJDUK, Z and HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P and HERR, H HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M and HRUBEC, J HUET, C HULTH, PO HULTQVIST, K IOANNOU, P and ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P and JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATARGIN, A and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETOV, O KRAMER, PH KROLIKOWSKI, J KRONKVIST, I KRSTIC, J KRUENERMARQUIS, U KRUPINSKI, W KULKA, K KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LEVY, JM and LIEB, E LIKO, D LILLETHUN, E LINDGREN, J LINDNER, R and LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M and LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D and LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MALTEZOS, A MANDL, F MARCO, J MARGONI, M MARIN, JC and MARKOU, A MARON, T MARTI, S MATHIS, L MATORRAS, F and MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M and MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MIKULEC, I MIRABITO, L MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NEGRI, P and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P and OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H and PAPADOPOULOU, TD PAPE, L PASSERI, A PEGORARO, M and PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PETRIDOU, C PETROLINI, A PETTERSEN, TE PIERRE, F and PIMENTA, M PINGOT, O POL, ME POLOK, G POROPAT, P and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONJIN, V RONNQVIST, C ROSENBERG, EI and ROSSI, S ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K SAARIKKO, H and SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M and SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R and SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S and SIMONETTO, F SISAKIAN, AN SKAALI, TB SKJEVLING, G and SMADJA, G SMIRNOV, N SMITH, GR SOSNOWSKI, R SPASSOFF, TS and SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAPNES, S STAVROPOULOS, G STICHELBAUT, F STOCCHI, A and STRAUSS, J STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O and THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TOMARADZE, A and TORASSA, E TORTORA, L TRAINOR, MT TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A and TSYGANOV, EN TURALA, M TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O and UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VILANOVA, D VINCENT, P VISHNEVSKY, N and VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P and WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G and WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G and ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G and ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Seven unambiguous events out of a sample of 270 000 Z0 decays, contain in tile same jet a D(s) meson and a muon at large transverse momentum relative to the et axis. These events are direct evidence for B(s)0 meson production in hadronic Z0 decays. The production rate of these events, relative to all hadronic Z0 decays is ( 18 +/- 8) x 10(-5) this number including the relevant branching fractions of the B(s)0 and D(s). The value of the B(s)0 meson lifetime relative to the average B meson lifetime is measured to be 0.8 +/- 0.4.
Published: 1992

15. MULTIPLICITY DEPENDENCE OF MEAN TRANSVERSE-MOMENTUM IN E+E- ANNIHILATIONS AT LEP ENERGIES

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY and BARONCELLI, A BARRING, O BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELOUS, K BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONAPART, M and BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOTNER, O and BOUQUET, B BOURDARIOS, C BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, A CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC and CATTAI, A CAVALLO, FR CERRITO, L CHAN, A CHARPENTIER, P and CHAUSSARD, L CHAUVEAU, J CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M and MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E and DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUNCEY, PD DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C and DELIKARIS, D DELORME, S DELPIERRE, P DEMARIA, N and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y DULINSKI, W EEK, LO EEROLA, PAM EKELOF, T and EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D and FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FOLEGATI, P FONTANELLI, F and FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG and FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H and FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOVATYUK, VM CADENAS, JJGY and GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A and GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUY, J HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HARRIS, FJ HECK, BW and HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HIETANEN, I and HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF and HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K and HUSSON, D IOANNOU, P ISENHOWER, D IVERSEN, PS and JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L and JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M and KATARGIN, A KATSANEVAS, S KATSOUFIS, EC KERANEN, R and KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOEHNE, JH and KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KOSTIUKHIN, V KOURKOUMELIS, C KRAMER, PH and KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I KRSTIC, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I LLOSA, R and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ and LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARON, T MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MENICHETTI, E MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V OBRAZTSOV, V OESTERBERG, K OLSHEVSKI, AG and ORAVA, R OSTANKOV, A OURAOU, A PAGANONI, M PAIN, R and PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M and PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PIERRE, F PIMENTA, M PINGOT, O POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONJIN, V RONNQVIST, C ROSENBERG, EI and ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANN, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y and SAJOT, G SALT, J SANCHEZ, E SANCHEZ, J SANNINO, M and SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE and SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G and SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S and SIMONETTO, F SISSAKIAN, AN SKAALI, TB SKJEVLING, G and SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R and SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T and TAVERNIER, S THEODOSIOU, GE TILQUIN, A TIMMERMANS, J and TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O and TORASSA, E TORTORA, L TRAINOR, MT TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A and TSYGANOV, EN TURALA, M TURCHETTA, R TURLUER, ML and TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E and FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P and VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L and VENUS, W VERBEURE, F VERTOGRADOV, LS VILANOVA, D and VISHNEVSKY, N VITALE, L VLASOV, E VLASSOPOULOS, S and VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR and WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: A strong increase of the mean transverse momentum [p(t)] with the number of charged particles n(ch) is observed in e+e- annihilations into hadrons at LEP energies, The effect resembles correlations observed in hadron-hadron interactions. In e+e- annihilations the [p(t)] and n(ch) correlations can be accounted for by gluon radiation.
Published: 1992

16. MULTIPLICITY FLUCTUATIONS IN HADRONIC FINAL-STATES FROM THE DECAY OF THE Z(0)

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G and BARDIN, DY BARKER, G BARONCELLI, A BARRING, O BARRIO, JA and BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y and BELTRAN, P BENEDIC, D BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J and BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P and BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S and BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV and BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA and BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA and CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V and CAO, F CARENA, F CARROLL, L CASO, C GIMENEZ, MVC and CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R and CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G and DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DAVID, P and DASILVA, W DEFOIX, C DELIKARIS, D DELORME, S and DELPIERRE, P DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y EEK, LO and EEROLA, PAM EHRET, R EKELOF, T EKSPONG, G PEISERT, AE and ENGEL, JP FASSOULIOTIS, D FEARNLEY, TA FEINDT, M and ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H and FOKITIS, E FONTANELLI, F FORBES, KAJ FOUSSET, JL and FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG and FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H and FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R GOLOB, B GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUY, J HAEDINGER, U and HAHN, F HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A and HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H and HESSING, TL HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ and HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO and HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J and HUET, C HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G and JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M and JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN and KING, B KJAER, NJ KLEIN, H KLEMPT, W KLOVNING, A and KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P and KOPF, M KORCYL, K KORYTOV, AV KOSTIOUKHINE, V and KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KROLIKOWSKI, J and KRONKVIST, I KRUENERMARQUIS, U KRUPINSKI, W KULKA, K and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LEVY, JM LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F and MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V NILSEN, PES NISS, P OBRAZTSOV, V OLSHEVSKI, AG and ORAVA, R OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PASSERI, A and PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PETTERSEN, TE and PIERRE, F PIMENTA, M PINGOT, O POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REDAELLI, NG and REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F and RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A and RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI and ROSSI, S ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBICKI, K and SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J and SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G and SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G and SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISAKIAN, AN SKAALI, TB and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAPNES, S STAVROPOULOS, G STICHELBAUT, F STOCCHI, A and STRAUSS, J STRAVER, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O and THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E and TORTORA, L TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M and TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G and VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW and VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS and VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V and WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEHR, A and WEIERSTALL, M WEILHAMMER, P WERNER, J WETHERELL, AM and WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N and YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R and FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment
Abstract: An analysis of the fluctuations in the phase space distribution of hadrons produced in the decay of 78829 Z0 has been carried out, using the method of factorial moments. The high statistics collected by the DELPHI experiment at LEP during 1990 allowed studies of the event sample both globally and in intervals of p(t) and multiplicity, and for different jet topologies and for single jets. A large contribution to the factorial moments of the one-dimensional data on rapidity with respect to the event axis comes from hard gluons. Details of factorial moments in two and three dimensions are presented. Influences of resonance decays have been studied by Monte Carlo simulation: one-dimensional factorial moments at low p(t), and two-, three-dimensional analyses are affected. Parton shower models describe the data reasonably well.
Published: 1992

17. STUDY OF ORIENTATION OF 3-JET EVENTS IN Z(0) HADRONIC DECAYS USING THE DELPHI DETECTOR

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARBIELLINI, G and BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATTAGLIA, M BATES, MJ BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELOUS, K and BELTRAN, P BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOGOLUBOV, PN and BOLOGNESE, T BONAPART, M BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORNER, H BOSIO, C and BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPAGNE, JE CAMPION, A CAMPORESI, T CANALE, V CAO, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHAPKIN, M CHARPENTIER, P and CHECCHIA, P CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P and CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL and CONTRI, R COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROSLAND, N CROZON, M MAESTRO, JC and CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M and DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD and DAVENPORT, M DAVID, P DEANGELIS, A DEBEER, M DEBOECK, H and DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEFOIX, C DELIKARIS, D and DELORME, S DELPIERRE, P DEMARIA, N DEMIN, A DERKAOUI, J and DICIACCIO, L DIJKSTRA, H DJAMA, F DOLBEAU, J and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DULINSKI, W DZHELYADIN, R EEK, LO EEROLA, PAM EKELOF, T and EKSPONG, G PEISERT, AE ENGEL, JP FALALEEV, V and FASSOULIOTIS, D ALONSO, MF FERRER, A FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FOLEGATI, P FONTANELLI, F FORSBACH, H FRANEK, B FRANSSON, KE FRENKIEL, P and FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F and FURNIVAL, K FURSTENAU, H FUSTER, J GAGO, JM GALEAZZI, G and GAMBA, D GARCIA, C GARCIA, J GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GLITZA, KW and GOKIELI, R GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E and GROS, MH GROSDIDIER, G GROSSETETE, B GUY, J HAHN, F and HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HARRIS, FJ HECK, BW and HERBST, I HERNANDEZ, JJ HERQUET, P HERR, H HIETANEN, I and HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R and HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE and HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D and HYAMS, BD IOANNOU, P ISENHOWER, D IVERSEN, PS and JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L and JUILLOT, P KALKANIS, G KALMUS, G KANTARDJIAN, G KAPUSTA, F KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLIUTCHNIKOV, G KLOVNING, A KLUIT, P and KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M and KORCYL, K KORYTOV, AV KORZEN, B KOURKOUMELIS, C and KREUZBERGER, T KROLIKOWSKI, J KRSTIC, J KRUENERMARQUIS, U and KRUPINSKI, W KUCEWICZ, W KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEMONNE, J and LENZEN, G LEPELTIER, V LETESSIERSELVON, A LIKO, D LIEB, E LILLETHUN, E LINDGREN, J LIPNIACKA, A LIPPI, I and LLOSA, R LOERSTAD, B LOKAJICEK, M LOKEN, JG AGUERA, MAL and LOPEZFERNANDEZ, A LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUCOCK, R LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MALTEZOS, A MALTEZOS, S MANDL, F MARCO, J MARGONI, M and MARIN, JC MARKOU, A MARTI, S MATHIS, L MATORRAS, F and MATTEUZZI, C MATTHIAE, G MATVEEV, M MAZZUCATO, M and MCCUBBIN, M MCKAY, R MCNULTY, R MENICHETTI, E MERONI, C and MEYER, WT MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV and MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR and MORETTINI, P MUELLER, H MULLER, H MURRAY, WJ MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V OBRAZTSOV, V and OLSHEVSKI, AG ORAVA, R OSTANKOV, A OURAOU, A PAIN, R and PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M and PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PIERRE, F and PIMENTA, M PINGOT, O PINSENT, A POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADOJICIC, D RAGAZZI, S RANGE, WH RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I and ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C and ROSENBERG, EI ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K and SAARIKKO, H SACQUIN, Y SALT, J SANCHEZ, E SANCHEZ, J and SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCURI, F and SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R and SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISSAKIAN, AN SKAALI, TB SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAVROPOULOS, G STICHELBAUT, F and STOCCHI, A STRAUSS, J STRUB, R STUBENRAUCH, CJ and SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T and TAVERNIER, S THEODOSIOU, GE TILQUIN, A TIMMERMANS, J and TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TORTORA, L and TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W and TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M and TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S and ULLALAND, O UVAROV, VA VALENTI, G VALLAZZA, E FERRER, JAV VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANEIJNDHOVEN, N VANDERVELDE, C VARELA, J VAZ, P VEGNI, G VELASCO, J VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VIBERT, L VILANOVA, D VITALE, L VLASOV, EV VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M and WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZEVGOLATAKOS, E and ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ and ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The study of the orientation of three-jet events from e+ e- –> Z0 –> multi-hadrons is presented, in particular the polar angle distributions of the thrust axis and of the normal to the three-jet plane, and the azimuthal correlations between the hadron plane and the one defined by the beam and thrust axes. The data are compared with results at lower energy and with QCD predictions. Good agreement with QCD predictions is observed. The scalar gluon theory is excluded by the data.
Published: 1992

18. SEARCH FOR SCALAR LEPTOQUARKS FROM Z(0) DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P and BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATES, MJ and BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONAPART, M and BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORNER, H BOSIO, C BOSTJANCIC, B BOTNER, O and BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD and BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA and CACCIA, M CALVI, M ROZAS, AJC CAMPION, A CAMPORESI, T and CANALE, V CAO, F CARENA, F CARROLL, L CASO, C and CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHAN, A CHAPKIN, M CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD DAVENPORT, M DAVID, P and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P and DEMARIA, N DERKAOUI, J DICIACCIO, L DIJKSTRA, H and DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M and DREES, J DRIS, M DUFOUR, Y DULINSKI, W DZHELYADIN, R and EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G PEISERT, AE and ENGEL, JP FASSOULIOTIS, D FEINDT, M ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FOLEGATI, P FONTANELLI, F FORBES, KAJ FORSBACH, H and FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM and CADENAS, JGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROS, MH GROSDIDIER, G and GROSS, E GROSSETETE, B GROSSEWIESMANN, P GUY, J HAHN, F and HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HARRIS, FJ HECK, BW and HENKES, T HERBST, I HERNANDEZ, JJ HERQUET, P HERR, H and HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD and HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D and HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO and HULTQVIST, K HUSSON, D IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B and KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K and KORYTOV, AV KOSTIUKHIN, V KOURKOUMELIS, C KREUZBERGER, T and KROLIKOWSKI, J KRONKVIST, I KRSTIC, J KRUENERMARQUIS, U and KRUPINSKI, W KUCEWICZ, W KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIKO, D LIEB, E LILLETHUN, E and LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG AGUERA, MAL LOPEZFERNANDEZ, A and LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUCOCK, R and LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MANDL, F and MARCO, J MARGONI, M MARIN, JC MARKOU, A MARTI, S and MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MENICHETTI, E MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MURRAY, WJ MYATT, G NARAGHI, F NAUKORZEN, U and NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTANKOV, A and OURAOU, A PAIN, R PALKA, H PAPADOPOULOU, T PAPE, L and PASSERI, A PEGORARO, M PEREVOZCHIKOV, V PERNICKA, M and PERROTTA, A PIERRE, F PIMENTA, M PINGOT, O POL, ME and POLOK, G POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J and RADOJJCIC, D RAGAZZI, S RATOFF, PN READ, AL and REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C and ROSENBERG, EI ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K and SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, E and SANCHEZ, J SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCURI, F SEGAR, AM SEKULIN, R SESSA, M and SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB and SKJEVLING, G SMADJA, G SMITH, GR SMIRNOV, N SOSNOWSKI, R and SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H and STANESCU, C STAVROPOULOS, G STICHELBAUT, F STOCCHI, A and STRAUSS, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TAVERNIER, S THEODOSIOU, G and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TOMARADZE, A TORTORA, L TRAINOR, MT and TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G and TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURCHETTA, R and TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O and UVAROV, VA VALENTI, G VALLAZZA, E FERRER, JAV and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANDERVELDE, C and VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERTOGRADOV, LS VIBERT, L VILANOVA, D and VISHNEVSKY, N VLASOV, EV VLASSOPOULOS, S VODOPYANOV, AS and VOLLMER, M VOLPONI, S VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J and WILKINSON, GR WILLIAMS, WSC WINTER, M WORMALD, D and WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A and ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E and ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ and ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: We have searched for pair produced scalar leptoquarks each decaying to a quark and a charged lepton in a sample of 116 000 hadronic Z0 events produced at LEP. No candidate was detected and cross section and branching ratio limits are set for the above process at 95% CL. Mass limits are found to be about 42 GeV/c2 depending only slightly on the models used and a coupling times branching ratio exclusion line is drawn for a scalar leptoquark with a free coupling. We have also probed the mass region above 45 GeV/c2 for a singly produced scalar leptoquark and set limits on the cross section and the coupling lambda(2)/4-pi up to 60 GeV.
Published: 1992

19. PRODUCTION OF STRANGE PARTICLES IN THE HADRONIC DECAYS OF THE Z(0)

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY and BARONCELLI, A BARRING, O BARTL, W BATES, MJ BATTAGLIA, M and BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M and BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P BENEDIC, D and BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V and BOGOLUBOV, PN BOLOGNESE, T BONAPART, M BONESINI, M and BONIVENTO, W BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H and BOSIO, C BOSTJANCIC, B BOTNER, O BOUQUET, B and BOURDARIOS, C BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BROWN, RCA and BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC and CAMPION, A CAMPORESI, T CANALE, V CAO, F CARENA, F and CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHAN, A CHAPKIN, M and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD DAVENPORT, M DAVID, P and DASILVA, W DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H and DEBOER, W DECLERCQ, C DELASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEMIN, A DIJKSTRA, H and DICIACCIO, L DJAMA, F DOLBEAU, J DOLL, O DONSZELMANN, M and DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y and DULINSKI, W EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP FALALEEV, V FASSOULIOTIS, D and FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FOLEGATI, P FONTANELLI, F and FORBES, KAJ FORSBACH, H FRANEK, B FRENKIEL, P FRIES, DC and FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K and FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P and GAZIS, EN GERBER, JP GIACOMELLI, P GLITZA, KW GOKIELI, R and GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A GOPAL, G and GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E and GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B and GUY, J HAHN, F HAHN, M HAIDER, S HAJDUK, Z and HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HARRIS, FJ HECK, BW HENKES, T HERBST, I HERNANDEZ, JJ and HERQUET, P HERR, H HIETANEN, I HIGGINS, CO HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M and HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D IOANNOU, P and ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P and JARLSKOG, G JEANMARIE, B JOHANSSON, EK JOHNSON, D and JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G and KAPUSTA, F KATSANEVAS, S KATSOUFIS, EC KERANEN, R and KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ and KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M and KORATZINOS, M KORCYL, K KORYTOV, AV KOURKOUMELIS, C and KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I KRSTIC, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL and LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAGNUSSEN, N MAILLARD, J MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MATVEEV, M MAZZUCATO, M MCCUBBIN, M MCKAY, R and MCNULTY, R MENICHETTI, E MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F and NAUKORZEN, U NAVARRIA, FL NEGRI, P NIELSEN, BS and NIJJHAR, B NIKOLAENKO, V OBRAZTSOV, V OESTERBERG, K and OLSHEVSKI, AG ORAVA, R OSTANKOV, A OURAOU, A PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A and PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M and PERROTTA, A PIERRE, F PIMENTA, M PINGOT, O POL, ME and POLOK, G POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D and RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F and RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A and RONCAGLIOLO, I RONCHESE, P RONJIN, V RONNQVIST, C and ROSENBERG, EI ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K and SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, E and SANCHEZ, J SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCURI, F SEGAR, AM SEKULIN, R SESSA, M and SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TABARELLI, T TAVERNIER, S THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L TRAINOR, MT and TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURCHETTA, R and TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V and VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VILANOVA, D VITALE, L VLASOV, E and VLASSOPOULOS, S VODOPYANOV, AS VOLLMER, M VOLPONI, S and VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C and WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR and WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment
Abstract: An analysis of the production of strange particles from the decays of the Z0 boson into multihadronic final states is presented. The analysis is based on about 90 000 selected hadronic Z0 decays collected by the DELPHI detector at LEP in 1990. K(s)0, K* +/-, LAMBDA(LAMBDABAR) and XI- (XI+) have been identified by their characteristic decays. The measured production cross sections are compared with predictions of the Lund Monte Carlo tuned to data at PEP/PETRA energies.
Published: 1992

20. SEARCHES FOR HEAVY NEUTRINOS FROM Z-DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P and BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATES, MJ and BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONAPART, M and BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B and BOTNER, O BOUQUET, B BOURDARIOS, C BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, A CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC and CATTAI, A CAVALLO, FR CERRITO, L CHAN, A CHAPKIN, M and CHARPENTIER, P CHAUSSARD, L CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M and MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E and DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAUNCEY, PD DAVENPORT, M DAVID, P DEFOIX, C DELIKARIS, D and DELORME, S DELPIERRE, P DEMARIA, N DEANGELIS, A and DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD and DEGROOT, N DELAVAISSIERE, C DELOTTO, B DEMIN, A and DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DOLL, O and DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M and DUFOUR, Y DULINSKI, W DZHELYADIN, R EEK, LO EEROLA, PAM and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP and FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FOLEGATI, P and FONTANELLI, F FORBES, KAJ FORSBACH, H FRANEK, B and FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J and GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROSDIDIER, G GROSS, E and GROSSEWIESMANN, P GROSSETETE, B GUY, J HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HARRIS, FJ HECK, BW and HENKES, T HERBST, I HERNANDEZ, JJ HERQUET, P HERR, H and HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD and HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D and HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO and HULTQVIST, K HUSSON, D IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALMUS, G KAPUSTA, F and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M and KORCYL, K KORYTOV, AV KOSTIUKHIN, V KOURKOUMELIS, C and KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I KRSTIC, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F and LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL and LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAGNUSSEN, N MAILLARD, J MALTEZOS, A and MANDL, F MARCO, J MARGONI, M MARIN, JC MARKOU, A and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R and MENICHETTI, E MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAUKORZEN, U and NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V OBRAZTSOV, V OESTERBERG, K OLSHEVSKI, AG and ORAVA, R OSTANKOV, A OURAOU, A PAGANONI, M PAIN, R and PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M and PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PIERRE, F PIMENTA, M PINGOT, O POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D and RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, U and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, E SANCHEZ, J SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F SISSAKIAN, AN and SKAALI, TB SKJEVLING, G SMADJA, G SMIRNOV, N SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAVROPOULOS, G STICHELBAUT, F and STOCCHI, A STRAUSS, J STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T TAVERNIER, S TCHIKILEV, O and THEODOSIOU, GE TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TORASSA, E and TORTORA, L TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN and TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S and ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV and VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VARELA, J VAZ, P VEGNI, G VENTURA, L VENUS, W and VERBEURE, F VERTOGRADOV, LS VIBERT, L VILANOVA, D and VITALE, L VLASOV, E VLASOV, EV VLASSOPOULOS, S and VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M and WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R and FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We have searched for possible fourth family heavy neutrinos, pair produced in Z0 decays, in a sample of about 112 000 hadronic Z0 final states collected with the DELPHI detector. For all mixing matrix elements we exclude a new Dirac neutrino lighter than 44.5 GeV at a 95% confidence level, if the neutrino couples to the electron or muon family, and lighter than 44.0 GeV, if the neutrino couples to the tau family. Depending on the values of the mixing element and to which lepton family the neutrino couples, we obtain mass limits up to 46.2 GeV. For all mixing matrix elements we exclude a new Majorana neutrino lighter than 39.0 GeV, if it couples to the electron or the muon family, and lighter than 38.2 GeV, if it couples to the tau family. Depending on the values of the mixing matrix element and to which lepton family the neutrino couples, we obtain mass limits up to 44.7 GeV. We also exclude stable new Dirac neutrinos lighter than 45.0 GeV and new Majorana neutrinos lighter than 39.5 GeV.
Published: 1992

21. A SEARCH FOR NEUTRAL HIGGS PARTICLES IN Z(0) DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, E ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P and BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATES, MJ and BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S and BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONAPART, M and BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B and BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, A and CAMPORESI, T CANALE, V CAO, F CARENA, F CARROLL, L and CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHAN, A CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD DAVENPORT, M DAVID, P and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P and DEMARIA, N DERKAOUI, J DICIACCIO, L DIJKSTRA, H and DJAMA, F DOLBEAU, J DOLL, O DONSZELMANN, M DOROBA, K and DRACOS, M DREES, J DRIS, M DUFOUR, Y DULINSKI, W and EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G PEISERT, AE and ENGEL, JP FASSOULIOTIS, D FEINDT, M FENYUK, A ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H and FOKITIS, E FOLEGATI, P FONTANELLI, F FORBES, KAJ and FORSBACH, H FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG and FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K FURSTENAU, H and FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J and GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROS, MH GROSDIDIER, G and GROSS, E GROSSETETE, B GROSSEWIESMANN, P GUMENYUK, S and GUY, J HAHN, F HAHN, M HAIDER, S HAJDUK, Z and HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HARRIS, FJ HECK, BW HENKES, T HERBST, I HERNANDEZ, JJ and HERQUET, P HERR, H HIETANEN, I HIGGINS, CO HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONOREPF HOOPER, JE HOULDEN, M and HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D IOANNOU, P and ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P and JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KAPUSTA, F KATSANEVAS, S KATSOUFIS, EC and KERANEN, R KESTEMAN, J KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P and KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KOSTRIKOV, M and KOURKOUMELIS, C KREUZBERGER, T KROLIKOWSKI, J KRONKVIST, I and KRSTIC, J KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W and KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW and LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G and LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A LIKO, D LIEB, E and LILLETHUN, E LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R and LOERSTAD, B LOKAJICEK, M LOKEN, JG AGUERA, MAL and LOPEZFERNANDEZ, A LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ and LUCOCK, R LUTZ, P LYONS, L MAEHLUM, G MAGNUSSEN, N and MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARGONI, M and MARIN, JC MARKOU, A MARTI, S MATHIS, L MATORRAS, F and MATTEUZZI, C MATTHIAE, G MATVEEV, M MAZZUCATO, M and MCCUBBIN, M MCKAY, R MCNULTY, R MENICHETTI, E MEOLA, G and MERONI, C MEYER, WT MICHELOTTO, M MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ and MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P and NIELSEN, BS NIJJHAR, B NIKOLAENKO, V OBRAZTSOV, V and OLSHEVSKI, AG ORAVA, R OSTANKOV, A OURAOU, A PAGANONI, M and PAIN, R PALKA, H PAPADOPOULOU, T PAPE, L PASSERI, A and PEGORARO, M PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A and PIERRE, F PIMENTA, M PINGOT, O POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG and REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F and RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I ROMERO, A and RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI and ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANN, V RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, E SANCHEZ, J SANNINO, M and SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE and SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G and SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S and SIMONETTO, F SISSAKIAN, AN SKAALI, TB SKJEVLING, G and SMADJA, G SMITH, GR SMIRNOV, N SOSNOWSKI, R SPASSOFF, TS and SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRUB, R SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TABARELLI, T TAVERNIER, S THEODOSIOU, G TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TORTORA, L TRAINOR, MT TREILLE, D TREVISAN, U and TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T and TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B and UEBERSCHAER, S ULLALAND, O UVAROV, VA VALENTI, G and VALLAZZA, E FERRER, JAV VANAPELDOORN, GW VANDAM, P and VANDONINCK, WK VANDERVELDE, C VARELA, J VAZ, P VEGNI, G and VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS and VIBERT, L VILANOVA, D VITALE, L VLASOV, EV VLASSOPOULOS, S VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC WINTER, M and WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D and ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R and FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The search in DELPHI data for neutral Higgs bosons is described. No candidate for the Standard Model Higgs is seen in Z0 decays to H-0-nu-nuBAR, H-0-mu+-mu- or H-0-tau+-tau- after selections that proved efficient for finding simulated H-0. One remaining candidate for Z0 –> H-0e+ e- is consistent with background. Together with our earlier studies, these results restrict the H-0 mass to be above 38 GeV/c2 at the 95% confidence level. No signal is found for decays of Minimal Supersymmetric Standard Model neutral Higgs bosons to tau+-tau-. Limits are obtained for their decays to produce four jets.
Published: 1992

22. Study of Orientation of 3-jet Events In Z(0) Hadronic Decays Using the Delphi Detector

Author: Abreu, P, Adam, W, Adami, F, Adye, T, Akesson, T, Alekseev, Gd, Allen, P, Almehed, S, Alted, F, Alvsvaag, Sj, Amaldi, U, Anassontzis, E, Antilogus, P, Apel, Wd, Apsimon, Rj, Asman, B, Astier, P, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Bardin, Dy, Baroncelli, A, Barring, O, Bartl, W, Battaglia, M, Bates, Mj, Baubillier, M, Becks, Kh, Beeston, Cj, Begalli, M, Beilliere, P, Belokopytov, Y, Belous, K, Beltran, P, Benedic, D, Benlloch, Jm, Berggren, M, Bertrand, D, Biagi, S, Bianchi, F, Bibby, Jh, Bilenky, Ms, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bogolubov, Pn, Bolognese, T, Bonapart, M, Bonesini, M, Bonivento, W, Booth, Psl, Boratav, M, Borgeaud, P, Borner, H, Bosio, C, Botner, O, Bouquet, B, Bozzo, M, Braibant, S, Branchini, P, Brand, Kd, Brenner, Ra, Bricman, C, Brown, Rca, Brummer, N, Brunet, Jm, Bugge, L, Buran, T, Burmeister, H, Buytaert, Jama, Caccia, M, Calvi, M, Rozas, Ajc, Campagne, Je, Campion, A, Camporesi, T, Canale, V, Cao, F, Carroll, L, Caso, C, Castelli, E, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, Ga, Chevalier, L, Chliapnikov, P, Chorowicz, V, Cirio, R, Clara, Mp, Collins, P, Contreras, Jl, Contri, R, Cosme, G, Couchot, F, Crawley, Hb, Crennell, D, Crosetti, G, Crosland, N, Crozon, M, Maestro, Jc, Czellar, S, Dagoret, S, Dahljensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Dauncey, Pd, Davenport, M, David, P, Deangelis, A, Debeer, M, Deboeck, H, Deboer, W, Declercq, C, Laso, Mdmd, Degroot, N, Delavaissiere, C, DE LOTTO, Barbara, Defoix, C, Delikaris, D, Delorme, S, Delpierre, P, Demaria, N, Demin, A, Derkaoui, J, Diciaccio, L, Dijkstra, H, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dulinski, W, Dzhelyadin, R, Eek, Lo, Eerola, Pam, Ekelof, T, Ekspong, G, Peisert, Ae, Engel, Jp, Falaleev, V, Fassouliotis, D, Alonso, Mf, Ferrer, A, Filippas, Ta, Firestone, A, Foeth, H, Fokitis, E, Folegati, P, Fontanelli, F, Forsbach, H, Franek, B, Fransson, Ke, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Furnival, K, Furstenau, H, Fuster, J, Gago, Jm, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gasparini, U, Gavillet, P, Gazis, En, Gerber, Jp, Giacomelli, P, Glitza, Kw, Gokieli, R, Golovatyuk, Vm, Cadenas, Jjgy, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Gros, Mh, Grosdidier, G, Grossetete, B, Guy, J, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Demonchenault, Gh, Harris, Fj, Heck, Bw, Herbst, I, Hernandez, Jj, Herquet, P, Herr, H, Hietanen, I, Higon, E, Hilke, Hj, Hodgson, Sd, Hofmokl, T, Holmes, R, Holmgren, So, Holthuizen, D, Honore, Pf, Hooper, Je, Houlden, M, Hrubec, J, Hulth, Po, Hultqvist, K, Husson, D, Hyams, Bd, Ioannou, P, Isenhower, D, Iversen, Ps, Jackson, Jn, Jalocha, P, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, 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Ventura, L, Venus, W, Verbeure, F, Vertogradov, Ls, Vibert, L, Vilanova, D, Vitale, L, Vlasov, Ev, Vodopyanov, As, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Weilhammer, P, Werner, J, Wetherell, Am, Wickens, Jh, Wikne, J, Wilkinson, Gr, Williams, Wsc, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zevgolatakos, E, Zhang, G, Zimin, Ni, Zito, M, Zitoun, R, Funchal, Rz, Zumerle, G, and Zuniga, J.
Subjects: PHYSICS, PETRA, LUND MONTE-CARLO, High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics, E+E-ANNIHILATION, JET FRAGMENTATION
Abstract: The study of the orientation of three-jet events from e+e-→Z0→ multi-hadrons is presented, in particular the polar angle distributions of the thrust axis and of the normal to the three-jet plane, and the azimuthal correlations between the hadron plane and the one defined by the beam and thrust axes. The data are compared with results at lower energy and with QCD predictions. Good agreement with QCD predictions is observed. The scalar gluon theory is excluded by the data.
Published: 1992

23. Electroweak parameters of the Z$^0$ resonance and the standard model

Author: DECAMP, D, Deschizeaux, B, Goy, C, Lees, JP, Minard, MN, Alemany, R, Crespo, JM, Delfino, M, Fernandez, E, Gaitan, V, Garrido, LI, Mir, LLM, Pacheco, A, Catanesi, MG, Creanza, D, de Palma, M, Farilla, A, Iaselli, G, Maggi, G, Maggi, M, Natali, S, Nuzzo, S, Quattromini, M, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Gao, Y, Hu, H, Huang, D, Huang, X, Lin, J, Lou, J, Qiao, C, Ruan, T, Wang, T, Xie, Y, Xu, D, Xu, R, Zhang, J, Zhao, W, Atwood, WB, Bauerdick, LAT, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Boudreau, J, Brown, D, Burnett, TH, Drevermann, H, Forty, RW, Grab, C, Hagelberg, R, Haywood, S, Hilgart, J, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lancon, E, Lehraus, I, Lohse, T, Lusiani, A, Marchioro, A, Martinez, M, Mato, P, Menary, S, Minten, A, Miotto, A, Miquel, R, Moser, HG, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A, Rothberg, J, Rotscheidt, H, Saich, M, St Denis, R, Schlatter, D, Takashima, M, Talby, M, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadin-Otwinowska, M, El Fellous, R, Falvard, A, Gay, P, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, JC, Pallin, D, Perret, P, Proriol, J, Prulhiere, F, Stimpfl, G, Hansen, JD, Hansen, JR, Hansen, PH, Mollerud, R, Nilsson, BS, Efthymiopoulos, I, Simopoulou, E, Vayaki, A, Badier, J, Blondel, A, Bonneaud, G, Bourotte, J, Braems, F, Brient, JC, Fouque, G, Gamess, A, Guirlet, R, Orteu, S, Rosowsky, A, Rouge, A, Rumpf, M, Tanaka, R, Videau, H, Candlin, DJ, Veitch, E, Parrini, G, Corden, M, Georgiopoulos, C, Ikeda, M, Lannutti, J, Levinthal, D, Mermikides, M, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Cerutti, F, Chiarella, V, D'Ettorre-Piazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, GP, Nicoletti, G, Passalacqua, L, Pepe-Altarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, AW, ten 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Salmon, DP, Thompson, JC, Bloch-Devaux, B, Colas, P, Klopfenstein, C, Locci, E, Loucatos, S, Monnier, E, Perez, P, Perlas, JA, Pettier, F, Rander, J, Renardy, JF, Roussarie, A, Schuller, JP, Schwindling, J, Vallage, B, Ashman, JG, Booth, CN, Buttar, C, Carney, R, Cartwright, S, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martin, J, Parker, D, Reeves, P, Thomson, LF, Barberio, E, Brandt, S, Burkhardt, H, Grupen, C, Meinhard, H, Mirabito, L, Schaifer, U, Seywerd, H, Apollinari, G, Giannini, G, Gobbo, B, Liello, F, Ragusa, F, Rolandi, L, Stiegler, U, Bellantoni, L, Cinabro, D, Conway, JS, Cowen, DF, Feng, Z, Ferguson, DPS, Gao, YS, Grahl, J, Harton, JL, Jacobsen, JE, Jared, RC, Johnson, RP, Le Claire, BW, Pan, YB, Pater, JR, Saadi, Y, Sharma, V, Shi, ZH, Tang, YH, Walsh, AM, Wear, JA, Weber, FV, Whitney, MH, Wu, SL, Zobernig, G, ABREU, P, Adam, W, Adami, F, Adye, T, Akesson, T, Alekseev, GD, Allen, P, Almehed, S, Alted, F, Alvsvaag, SJ, Amaldi, U, Anassontzis, EG, Antilogus, P, Apel, 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P, Von der Schmitt, H, Schreiber, S, Schwarz, J, Scott, WG, Settles, M, Shen, BC, Sherwood, P, Shypit, R, Simon, A, Singh, P, Siroli, GP, Skuja, A, Smith, AM, Smith, TJ, Snow, GA, Sobie, RJ, Springer, RW, Sproston, M, Stephens, K, Stier, HE, Strom, D, Takeda, H, Takeshita, T, Taras, P, Tarem, S, Teixeira-Dias, P, Thackray, NJ, Tsukamoto, T, Turner, MF, Tysarczyk-Niemeyer, G, Van den plas, D, Van Kooten, R, VanDalen, GJ, Vasseur, G, Virtue, CJ, Wagner, A, Wahl, C, Walker, JP, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Weber, M, Weisz, S, Wells, PS, Wermes, N, Weymann, M, Whalley, MA, Wilson, GW, Wilson, JA, Wingerter, I, Winterer, VH, Wood, NC, Wotten, SA, Wyatt, TR, Yaari, R, Yang, Y, Yekutieli, G, Zacharov, I, Zeuner, W, Zorn, GT, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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 Nucléaire et de Hautes Énergies (LPNHE), 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), 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), ALEPH, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), 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), Bourquin, Maurice, Burger, William, Duchesneau, Dominique Robert, Extermann, Pierre, Field, John, Forconi, Gilles Raymond, Goujon, Didier, Hoorani, Hafeez-Ur-Rehman, Kienzle, Maria-Novella, Perrier, Jacques, Produit, Nicolas, Wenninger, Joerg Horst, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Wish, media, Context (language use), Temporality, ddc:500.2, temporalities, 01 natural sciences, elderly, Epistemology, Temporalities, Appropriation, Expression (architecture), 0103 physical sciences, Selection (linguistics), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Media system dependency theory, 010306 general physics, uses, Particle Physics - Experiment, time
Abstract: Media temporalities of the elderly : evolutions in stability This article shows the context of analysis and the first results of a research on media temporalities of the elderly. Several works have finely analysed the diversity of the media practices and studied meanings of media uses. I wish to continue these analyses by insisting on the evolutionary and dynamic aspect of the practices and temporalities of users having expanded, enhanced, so called "interactive" radio and especially television programming. A priori, the elderly, upon retirement, have a "full-time free time". Their media practices seem strongly influenced by their first experiments ; the appropriation of the various peripheral accessories which gradually came with the media, to the latest digital ones, seems to reinforce their habits of watching television. Their representations and relations with times and media are very far away from the image of television like omnipresent media or "devourer of time". Rather, their media practices are to be understood like a temporality of the occupation, according to the expression of Gerard Derèze, characterized by interest and utility. A particular glance at the users who do not carry out a systematic selection of the programs, accepting the unforeseen, highlights an approach of media and time that allow "useful encounter" which I would qualify in a first stage by : "chance and encounter" and "random and the following". The few points presented here make me assume that the global relation of the autonomous elderly persons to the media can evolve when confronted to their new temporal framework and the new program offer, whereas their representations and use of the media remain quite stable.
Published: 1992

24. CLASSIFICATION OF THE HADRONIC DECAYS OF THE Z0 INTO B-QUARK AND C-QUARK PAIRS USING A NEURAL NETWORK

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALGERI, A ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U and ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G and BARDIN, DY BARKER, G BARONCELLI, A BARRING, O BARRIO, JA and BARTL, W BATES, MJ BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y and BELTRAN, P BENEDIC, D BENVENUTI, AC BERGGREN, M and BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J and BLOCH, D BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORGEAUD, P and BORISOV, G BORNER, H BOSIO, C BOSTJANCIC, B BOSWORTH, S and BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV and BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA and BRIAND, H BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA and CACCIA, M CALVI, M ROZAS, AJC CAMPORESI, T CANALE, V and CAO, F CARENA, F CARROLL, L CASO, C GIMENEZ, MVC and CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM CIUCHINI, M CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COSMO, G COUCHOT, F and CRAWLEY, HB CRENNELL, D CROSETTI, G CROZON, M and MAESTRO, JC CZELLAR, S DAHLJENSEN, E DALMAGNE, B DAM, M and DAMGAARD, G DARBO, G DAUBIE, E DAUM, A DAUNCEY, PD and DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C and DELIKARIS, D DELORME, S DELPIERRE, P DELGIUDICE, P and DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W and DECLERCQ, C LASO, MDMD DEGROOT, N DELAVAISSIERE, C and DELOTTO, B DEMIN, A DIJKSTRA, H DICIACCIO, L DIAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEINDT, M ALONSO, MF FERRER, A FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORBES, KAJ FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P and FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F and FURNIVAL, K FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D and GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R and GOLOB, B GOLOYATYUK, VM CADENAS, JJGY GOOBAR, A GOPAL, G and GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E and GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B and GUMENYUK, S GUY, J HAEDINGER, U HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL and HIETANEN, I HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD and HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D and HONORE, PF HOOPER, JE HOULDEN, M HRUBEC, J HUET, C and HULTH, PO HULTQVIST, K IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G KALKKINEN, J KALMUS, G and KAPUSTA, F KARLSSON, M KARVELAS, E KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLEMPT, W and KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B and KOKKINIAS, P KOPF, M KORCYL, K KORYTOV, AV and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KROLIKOWSKI, J KRONKVIST, I KRUENERMARQUIS, U KUCEWICZ, W and KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C and LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LEDER, G LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E and LIKO, D LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F and MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MURRAY, WJ MYATT, G NARAGHI, F NAVARRIA, FL and NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V and NILSEN, PES NISS, P OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R and OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PASSERI, A and PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M and PERROTTA, A PETRIDOU, C PETROLINI, A PETROVYKH, L and PETTERSEN, TE PIERRE, F PIMENTA, M PINGOT, O and PLASZCZYNSKI, S POL, ME POLOK, G POROPAT, P PRIVITERA, P and PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J and RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W and RUHLMANNKLEIDER, V RUIZ, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHULZE, B SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISAKIAN, AN SKAALI, TB SKJEVLING, G SMADJA, G SMITH, GR and SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R and SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T and TAVERNIER, S TCHIKILEV, O THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, IG TODOROV, T TOET, DZ TOKER, O TORASSA, E TORTORA, L TREILLE, D and TREVISAN, U TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M and TZAMARIAS, S UEBERSCHAER, S ULLALAND, O UVAROV, V and VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C and VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK and VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F and VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M and VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M and WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J WALDNER, F and WICKENS, JH WIKNE, J WILKINSON, GR WILLIAMS, WSC and WINTER, M WITEK, M WORMALD, D WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: A classifier based on a feed-forward neural network has been used for separating a sample of about 123 500 selected hadronic decays of the Z0, collected by DELPHI during 1991, into three classes according to the flavour of the original quark pair: uuBAR + ddBAR + ssBAR (unresolved), ccBAR and bbBAR. The classification has been used to compute the partial widths of the ZO into b and c quark pairs. This gave GAMMA(ccBAR)/GAMMA(h) = 0.151 +/- 0.008 (stat.) +/- 0.041 (syst.), GAMMA(bbBAR)/GAMMA(h) = 0.232 +/- 0.005 (stat.) +/- 0.017 (syst.).
Published: 1992

25. BOSE-EINSTEIN CORRELATIONS IN THE HADRONIC DECAYS OF THE Z(0)

Author: ABREU, P ADAM, W ADYE, T AGASI, E ALEKSEEV, GD and ALLEN, P ALMEHED, S ALVSVAAG, SJ AMALDI, U ANASSONTZIS, EG ANDREAZZA, A ANTILOGUS, P APEL, WD APSIMON, RJ and ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY and BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ and BATTAGLIA, M BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BERGGREN, M BERTRAND, D BIANCHI, F BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOCCI, V and BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W and BOOTH, PSL BORGEAUD, P BORISOV, G BORNER, H BOSIO, C and BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B and BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M and ROZAS, AJC CAMPORESI, T CANALE, V CAO, F CARENA, F and CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHAPKIN, M and CHARPENTIER, P CHAUSSARD, L CHAUVEAU, J CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CHRIN, JTM CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL and CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB and CRENNELL, D CROSETTI, G CROZON, M MAESTRO, JC and CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M and DAMGAARD, G DARBO, G DAUBIE, E DAUM, A DAUNCEY, PD and DAVENPORT, M DAVID, P DASILVA, W DEFOIX, C and DELIKARIS, D DELLARICCIA, BA DELORME, S DELPIERRE, P and DEMARIA, N DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W and DECLERCQ, C LASO, MDMD DEGROOT, N DELAVAISSIERE, C and DELOTTO, B DEMIN, A DIJKSTRA, H DICIACCIO, L DJAMA, F and DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y EEK, LO EEROLA, PAM EHRET, R and EKELOF, T EKSPONG, G PEISERT, AE ENGEL, JP FASSOULIOTIS, D FEARNLEY, TA FEINDT, M ALONSO, MF FERRER, A and FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORBES, KAJ FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURNIVAL, K and FURSTENAU, H FUSTER, J GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P and GAZIS, EN GERBER, JP GIACOMELLI, P GOKIELI, R and GOLOVATYUK, VM CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A GRARD, F GRAZIANI, E and GROSDIDIER, G GROSS, E GROSSEWIESMANN, P GROSSETETE, B and GUY, J HAEDINGER, U HAHN, F HAHN, M HAIDER, S and HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HAO, W HARRIS, FJ HENKES, T HERNANDEZ, JJ HERQUET, P HERR, H HESSING, TL HIETANEN, I and HIGGINS, CO HIGON, E HILKE, HJ HODGSON, SD HOFMOKL, T and HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF and HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K and IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN and JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JOHNSON, D JONKER, M JONSSON, L JUILLOT, P and KALKANIS, G KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B and KOKKINIAS, P KOPF, M KORCYL, K KORYTOV, AV and KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH and KROLIKOWSKI, J KRONKVIST, I KRSTIC, J KRUENERMARQUIS, U and KRUPINSKI, W KULKA, K KURVINEN, K LACASTA, C and LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R LEDER, G LEDROIT, F LEITNER, R and LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LEVY, JM LIEB, E LIKO, D LILLETHUN, E and LINDGREN, J LINDNER, R LIPNIACKA, A LIPPI, I and LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A and AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P and LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F and MARCO, J MARGONI, M MARIN, JC MARKOU, A MARON, T and MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEOLA, G MERONI, C MEYER, WT MICHELOTTO, M MIKULEC, I and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL and NEGRI, P NIELSEN, BS NIJJHAR, B NIKOLAENKO, V and NILSEN, PES NISS, P OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R and OSTANKOV, A OSTERBERG, K OURAOU, A PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PASSERI, A and PEGORARO, M PENNANEN, J PEREVOZCHIKOV, V PERNICKA, M and PERROTTA, A PETROLINI, A PETTERSEN, TE PIERRE, F and PIMENTA, M PINGOT, O POL, ME POLOK, G POROPAT, P and PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M RIDKY, J and RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, S ROSSI, U and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SAJOT, G and SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H and SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEKULIN, R and SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SICCAMA, I and SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN and SKAALI, TB SKJEVLING, G SMADJA, G SMIRNOV, N SMITH, GR and SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAPNES, S STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R and SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P TABARELLI, T and TAVERNIER, S TCHIKILEV, O THEODOSIOU, GE TILQUIN, A and TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOKER, O TOMARADZE, A TORASSA, E TORTORA, L and TRAINOR, MT TREILLE, D TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURALA, M and TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G and VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VARELA, J VAZ, P VEGNI, G and VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS and VILANOVA, D VITALE, L VLASOV, E VLASSOPOULOS, S and VODOPYANOV, AS VOLLMER, M VOLPONI, S VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEHR, A WEIERSTALL, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR and WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R ZUBERI, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Bose-Einstein correlations between pairs of like-sign charged particles produced in e+e- annihilations near the Z0 peak have been studied using data taken with the DELPHI detector at LEP. An enhancement is found in the production of pairs of identical pions of similar momenta, with respect to a reference sample. Under the hypothesis that the pions are emitted by a spherically symmetrical source with gaussian density, the data indicate a radius of the source of r = 0.62 +/- 0.04(stat.) +/- 0.20(syst.) fm. The large systematic uncertainty reflects the sensitivity of r to the choice of the reference sample.
Published: 1992

26. DETERMINATION OF Z0 RESONANCE PARAMETERS AND COUPLINGS FROM ITS HADRONIC AND LEPTONIC DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARBIELLINI, G and BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATTAGLIA, M BATES, MJ BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S and BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOGOLUBOV, PN BOLOGNESE, T and BONAPART, M BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N and BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPAGNE, JE and CAMPION, A CAMPORESI, T CANALE, V CAO, F CARROLL, L and CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR and CERRITO, L CHAPKIN, M CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V and CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D and CROSETTI, G CROSLAND, N CROZON, M MAESTRO, JC CZELLAR, S and DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M and DAMGAARD, G DARBO, G DAUBIE, E DAUNCEY, PD DAVENPORT, M and DAVID, P DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W and DECLERCQ, C LASO, MDMD DEGROOT, N DELAVAISSIERE, C and DELOTTO, B DEMIN, A DEFOIX, C DELIKARIS, D DELORME, S and DELPIERRE, P DEMARIA, N DERKAOUI, J DICIACCIO, L and DIJKSTRA, H DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K and DRACOS, M DREES, J DRIS, M DUFOUR, Y DULINSKI, W and DZHELYADIN, R EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G and PEISERT, AE ENGEL, JP FASSOULIOTIS, D ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FOLEGATI, P FONTANELLI, F FORSBACH, H FRANEK, B and FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J GAGO, JM GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROS, MH GROSDIDIER, G and GROSSETETE, B GUMENYUK, S GUY, J HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HARRIS, FJ HECK, BW HERBST, I and HERNANDEZ, JJ HERQUET, P HERR, H HIETANEN, I HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M and HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D HYAMS, BD and IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK and JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KANTARDJIAN, G KAPUSTA, F KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA and KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLEMPT, W and KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P and KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KORZEN, B KOSTUKHIN, V KOURKOUMELIS, C KREUZBERGER, T and KROLIKOWSKI, J KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W and KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C and LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LEDER, G LEDROIT, F LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A LIKO, D LIEB, E LILLETHUN, E and LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG AGUERA, MAL LOPEZFERNANDEZ, A and LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUCOCK, R and LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A and MALTEZOS, S MANDL, F MARCO, J MARGONI, M MARIN, JC and MARKOU, A MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R and MCNULTY, R MENICHETTI, E MEOLA, G MERONI, C MEYER, WT and MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MULLER, H MURRAY, WJ MUYATT, G NARAGHI, F and NAUKORZEN, U NAVARRIA, FL NEGRI, P NIELSEN, BS and NIJJHAR, B NIKOLAENKO, V OBRAZTSOV, V OLSHEVSKI, AG and ORAVA, R OSTANKOV, A OURAOU, A PAIN, R PALKA, H and PAPADOPOULOU, T PAPE, L PASSERI, A PEGORARO, M and PEREVOZCHIKOV, V PERNICKA, M PERROTTA, A PIERRE, F and PIMENTA, M PINGOT, O PINSENT, A POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADOJICIC, D RAGAZZI, S RANGE, WH RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK and RICHARD, F RICHARDSON, M RIDKY, J RINAUDO, G RODITI, I and ROMERO, A RONCAGLIOLO, I RONCHESE, P RONNQVIST, C and ROSENBERG, EI ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T and RUCKSTUHL, W RUHLMANN, V RUIZ, A RYBICKI, K and SAARIKKO, H SACQUIN, Y SALT, J SANCHEZ, E SANCHEZ, J and SANNINO, M SCHAEFFER, M SCHAEL, S SCHNEIDER, H SCURI, F and SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R and SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F and SISSAKIAN, AN SKAALI, TB SKJEVLING, G SMADJA, G SMITH, GR SMIRNOV, N SOSNOWSKI, R SPASSOFF, TS SPIRITI, E and SQUARCIA, S STAECK, H STANESCU, C STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R and STUBENRAUCH, CJ SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TABARELLI, T TAVERNIER, S TCHIKILEV, O THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TORTORA, L TRAINOR, MT TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C and TSIROU, A TSYGANOV, EN TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, VA and VALENTI, G VALLAZZA, E FERRER, JAV VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VANEIJNDHOVEN, N VANDERVELDE, C and VARELA, J VAZ, P VEGNI, G VELASCO, J VENTURA, L and VENUS, W VERBEURE, F VERTOGRADOV, LS VIBERT, L VILANOVA, D VLASOV, EV VODOPYANOV, AS VOLLMER, M VOLPONI, S and VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C and WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR and WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M and ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: High Energy Physics::Experiment
Abstract: From measurements of the cross sections for e+ e - –> hadrons and the cross sections and forward-backward charge-asymmetries for e+ e- –> e+ e-, mu+ mu- and tau+ tau- at several centre-of-mass energies around the Z0 pole with the DELPHI apparatus, using approximately 150000 hadronic and leptonic events from 1989 and 1990, one determines the following Z0 parameters: the mass and total width M(Z) = 91.177 +/- 0.022 GeV, GAMMA(Z) = 2.465 +/- 0.020 GeV, the hadronic and leptonic partial widths GAMMA(h) = 1.726 +/- 0.019 GeV, GAMMA(t) = 83.4 +/- 0.8 MeV, the invisible width GAMMA(inv) = 488 +/- 17 MeV, the ratio of hadronic over leptonic partial widths R(Z)z = 20.70 +/- 0.29 and the Born level hadronic peak cross section sigma-0 = 41.84 +/- 0.45 nb. A flavour-independent measurement of the leptonic cross section gives very consistent results to those presented above (GAMMA(t) = 83.7 +/- 0.8 MeV). From these results the number of light neutrino species is determined to be N(nu) = 2.94 +/0. 10. The individual leptonic widths obtained are: GAMMA(e) = 82.4 +/- 1.2 MeV, GAMMA(mu) = 86.9 +/- 2.1 MeV and GAMMA(tau) = 82.7 +/- 2.4 MeV. Assuming universality, the squared vector and axial-vector couplings of the Z0 to charged leptons are: VBAR(t)2 = 0.0003 +/- 0.0010 and ABAR(l)2 = 0.2508 +/- 0.0027. These values correspond to the electroweak parameters: rho(eff) = 1.003 +/- 0.011 and sin2-theta(W)eff = 0.241 +/- 0.009. Within the Minimal Standard Model (MSM), the results can be expressed in terms of a single parameter: sin2-theta(W)MSBAR = 0.2338 +/- 0.0027. All these values are in good agreement with the predictions of the MSM. Fits yield 43 < m(top) < 215 GeV at the 95% level. Finally, the measured values of GAMMA(Z) and GAMMA(inv), are used to derive lower mass bounds for possible new particles.
Published: 1991

27. THE REACTION E+E--] GAMMA-GAMMA(GAMMA) AT Z0 ENERGIES

Author: ABREU, P ADAM, W ADAMI, F ADYE, T AKESSON, T and ALEKSEEV, GD ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E ANTILOGUS, P APEL, WD and APSIMON, RJ ASMAN, B ASTIER, P AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARBIELLINI, G and BARDIN, DY BARONCELLI, A BARRING, O BARTL, W BATTAGLIA, M BATES, MJ BAUBILLIER, M BECKS, KH BEESTON, CJ and BEGALLI, M BEILLIERE, P BELOKOPYTOV, Y BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S and BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BLYTH, S BOGOLUBOV, PN BOLOGNESE, T and BONAPART, M BONESINI, M BONIVENTO, W BOOTH, PSL BORATAV, M BORGEAUD, P BORISOV, G BORNER, H BOSIO, C BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N and BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPAGNE, JE and CAMPION, A CAMPORESI, T CANALE, V CAO, F CARROLL, L and CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR and CERRITO, L CHARPENTIER, P CHECCHIA, P CHELKOV, GA and CHEVALIER, L CHLIAPNIKOV, P CHOROWICZ, V CIRIO, R CLARA, MP COLLINS, P CONTRERAS, JL CONTRI, R COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G CROSLAND, N CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G and DAUBIE, E DAUNCEY, PD DAVENPORT, M DAVID, P and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and LASO, MDMD DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEMIN, A DEFOIX, C DELIKARIS, D DELORME, S DELPIERRE, P and DEMARIA, N DERKAOUI, J DICIACCIO, L DIJKSTRA, H and DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M and DREES, J DRIS, M DUFOUR, Y DULINSKI, W DZHELYADIN, R and EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G PEISERT, AE and ENGEL, JP FASSOULIOTIS, D FENYUK, A ALONSO, MF and FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FOLEGATI, P FONTANELLI, F FORSBACH, H FRANEK, B and FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FURNIVAL, K FURSTENAU, H FUSTER, J GAGO, JM GALEAZZI, G GAMBA, D GARCIA, C GARCIA, J and GASPARINI, U GAVILLET, P GAZIS, EN GERBER, JP and GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM and CADENAS, JJGY GOOBAR, A GOPAL, G GORSKI, M GRACCO, V and GRANT, A GRARD, F GRAZIANI, E GROS, MH GROSDIDIER, G and GROSSETETE, B GUMENYUK, S GUY, J HAHN, F HAHN, M and HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HARRIS, FJ HECK, BW HERBST, I and HERNANDEZ, JJ HERQUET, P HERR, H HIETANEN, I HIGON, E and HILKE, HJ HODGSON, SD HOFMOKL, T HOLMES, R HOLMGREN, SO HOLTHUIZEN, D HONORE, PF HOOPER, JE HOULDEN, M and HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D HYAMS, BD and IOANNOU, P ISENHOWER, D IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK and JOHNSON, D JONKER, M JONSSON, L JUILLOT, P KALKANIS, G and KALMUS, G KANTARDJIAN, G KAPUSTA, F KATARGIN, A and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H and KLEMPT, W KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B and KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K and KORYTOV, AV KORZEN, B KOSTUKHIN, V KOURKOUMELIS, C and KREUZBERGER, T KROLIKOWSKI, J KRUENERMARQUIS, U KRUPINSKI, W and KUCEWICZ, W KURVINEN, K LACASTA, C LAMBROPOULOS, C and LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LEDER, G LEDROIT, F LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A LIKO, D LIEB, E LILLETHUN, E and LINDGREN, J LIPNIACKA, A LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG AGUERA, MAL LOPEZFERNANDEZ, A and LOS, M LOUKAS, D LOUNIS, A LOZANO, JJ LUCOCK, R and LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A and MALTEZOS, S MANDL, F MARCO, J MARGONI, M MARIN, JC and MARKOU, A MARTI, S MATHIS, L MATORRAS, F MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R and MCNULTY, R MENICHETTI, E MERONI, C MEYER, WT MICHELOTTO, M MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MULLER, H MURRAY, WJ MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P NIELSEN, BS NIJJHAR, B and NIKOLAENKO, V OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R and OSTANKOV, A OURAOU, A PAIN, R PALKA, H PAPADOPOULOU, T and PAPE, L PASSERI, A PEGORARO, M PEREVOZCHIKOV, V and PERNICKA, M PERROTTA, A PIERRE, F PIMENTA, M PINGOT, O and PINSENT, A POL, ME POLOK, G POROPAT, P PRIVITERA, P and PULLIA, A PYYHTIA, J RADOJICIC, D RAGAZZI, S RANGE, WH RATOFF, PN READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, M and RIDKY, J RINAUDO, G RODITI, I ROMERO, A RONCAGLIOLO, I and RONCHESE, P RONNQVIST, C ROSENBERG, EI ROSSI, U and ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANN, V and RUIZ, A RYBICKI, K SAARIKKO, H SACQUIN, Y SALT, J and SANCHEZ, E SANCHEZ, J SANNINO, M SCHAEFFER, M and SCHAEL, S SCHNEIDER, H SCURI, F SEGAR, AM SEKULIN, R and SESSA, M SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P and SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPASSOFF, TS SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRUB, R STUBENRAUCH, CJ SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TABARELLI, T TAVERNIER, S THEODOSIOU, GE and TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG and TODOROV, T TOET, DZ TORTORA, L TRAINOR, MT TREILLE, D and TREVISAN, U TRISCHUK, W TRISTRAM, G TRONCON, C and TSIROU, A TSYGANOV, EN TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S and UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, VA and VALENTI, G VALLAZZA, E FERRER, JAV VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VANEIJNDHOVEN, N VANDERVELDE, C and VARELA, J VAZ, P VEGNI, G VELASCO, J VENTURA, L and VENUS, W VERBEURE, F VERTOGRADOV, LS VIBERT, L VILANOVA, D VLASOV, EV VODOPYANOV, AS VOLLMER, M VOLPONI, S and VOULGARIS, G VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C and WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J and WETHERELL, AM WICKENS, JH WIKNE, J WILKINSON, GR and WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A and ZALEWSKI, P ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M and ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment
Abstract: The total and differential cross-sections for the reaction e+e- –> gamma-gamma(gamma) are measured at centre of mass energies around 91 GeV using an integrated luminosity of 4.7 pb-1. The agreement with the QED prediction is good. Consequently there is no evidence for non-standard channels which would have the same experimental signature. The lower limits on the QED cutoff parameters are LAMBDA+ > 113 GeV and LAMBDA- > 95 GeV. An upper limit on the effective coupling between a possible excited electron and the gamma is derived. At 95% confidence level the branching ratios for Z0 decay into pi-0-gamma, eta-gamma and gamma-gamma-gamma are below 1.5 x 10(-4), 2.8 x 10(-4) and 1.4 x 10(-4) respectively.
Published: 1991

28. A STUDY OF THE REACTION E+E--]MU+MU- AROUND THE Z0 POLE

Author: Abreu, P Adam, W Adami, F Adye, T Akesson, T and Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Antilougus, P Apel, WD and Asman, B Astier, P Augustin, JE Augustinus, A Baillon, P and Bambade, P Barao, F Barbiellini, G Bardin, DY and Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Begalli, M Beilliere, P and Belokopytov, I Belous, K Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F and Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D and Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M and Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C and Botner, O Bonquet, B Bozzo, M Braibant, S Branchini, P and Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H and Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Charpentier, P Checchia, P and Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V and Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G and Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S and Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G and Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B and Defoix, C Delikaris, D Delorme, S Delpierre, P and Demaria, N Di Ciaccio, L Dijkstra, H Djama, F Dolbeau, J and Doll, O Donszelmann, M Doroba, K Dracos, M Drees, J and Dris, M Dulinski, W Dzhelyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V and Fassouliotis, D Fenyuk, A Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P and Fontanelli, F Forsbach, H Franek, B Fransson, KE and Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R and Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J and Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U and Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A and Gopal, G Gorski, M Gracco, V Grant, A Grard, F and Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, BW Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO and Holthuizen, D Hooper, JE Houlden, M Hrubec, J Hulth, PO and Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P and Jean-Marie, B Johansson, EK Johnson, D Jonker, M and Jonsson, L Juillot, P Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC and Keranen, R Kesteman, J Khomenko, BA Khovanski, NN King, B Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH and Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kostukhin, V and Kourkoumelis, C Kreuzberger, T Krolikowski, J and Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K and Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L and Lapchine, V Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G and Lepeltier, V Letessier-Selvon, A Lieb, E Lillethun, E and Lindgren, J Lippi, I Llosa, R Loerstad, B Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Los, M and Loukas, D Lounis, A Lozano, JJ Lucock, R Lutz, P and Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A and Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC and Markou, A Mathis, L Matorras, F Matteuzzi, C and Matthiae, G Mazzucato, M McCubbin, M McKay, R Mc Nulty, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA and Mitselmakher, GC Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P and Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V and Olshevski, AG Orava, R Ouraou, A Pain, R Palka, H and Papadopoulou, T Pape, T Passeri, A Pegoraro, M and Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M and Pingot, O Pinsent, A Pol, ME Polok, G Poropat, P and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M Ridky, J Rinaudo, G and Roditi, I Romero, A Ronchese, P Ronjin, V Rosenberg, EI and Rossi, U Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W and Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Salt, J and Sanchez, E Sanchez, J Sannino, M Schaeffer, M and Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M and Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G and Smadja, G Smith, GR Sosnowski, R Spassoff, TS Spiriti, E and Squarcia, S Staeck, H Stanescu, C Stavropoulos, G and Stichelbaut, F Stocchi, A Strauss, J Strub, R and Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P and Tavernier, S Tcherniaev, E Theodosiou, G Tilquin, A and Timmermans, J Timofeev, VG Tkatchev, LG Todorov, T Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D and Trevisan, U Trischuk, W Tristram, G Troncon, C Tsirou, A and Tsyganov, EN Turala, M Turchetta, R Turluer, ML and Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F and Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G and Velasco, J Ventura, L Venus, W Verbeure, F and Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N and Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G and Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F and Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM and Wickens, JH Wikne, J Wilkinson, GR Williams, WSC and Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N and Yepes, P Zaitsev, A Zalewska, A Zalewski, P and Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ and Zumerle, G Zuniga, J
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Measurements of the cross section and forward-backward asymmetry for the reaction e+e- –> mu+mu- using the DELPHI detector at LEP are presented. The data come from a scan around the Z0 peak at seven centre of mass energies, giving a sample of 3858 events in the polar angle region 22-degrees < theta < 158-degrees. From a fit to the cross section for 43-degrees < theta < 137-degrees, a polar angle region for which the absolute efficiency has been determined, the square root of the product of the Z0 –> e+e- and Z0 –> mu+mu- partial widths is determined to be (GAMMA-e-GAMMA-mu)1/2 = 85.0 +/- 0.9 (stat.) +/- 0.8 (syst.) MeV. From this measurement of the partial width, the value of the effective weak mixing angle is determined to be sin2(theta-w) = 0.2267 +/- 0.0037. The ratio of the hadronic to muon pair partial widths is found to be GAMMA-h/GAMMA-mu = 19.89 +/- 0.40 (stat.) +/- 0.19 (syst.). The forward-backward asymmetry at the resonance peak energy E(CMS) = 91.22 GeV is found to be A(FB) = 0.028 +/- 0.020 (stat.) +/- 0.005 (syst.). From a combined fit to the cross section and forward-backward asymmetry data, the products of the electron and muon vector and axial-vector coupling constants are determined to be V(e)V-mu = 0.0024 +/- 0.0015 (stat.) +/- 0.0004 (syst.) and A(e)A-mu = 0.253 +/- 0.003 (stat.) +/- 0.003 (syst.). These results are in good agreement with the expectations of the minimal standard model.
Published: 1991

29. EXPERIMENTAL-STUDY OF THE TRIPLE-GLUON VERTEX

Author: Abreu, P Adam, W Adami, F Adye, T Akesson, T and Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P and Augustin, JE Augustinus, A Baillon, P Bambade, P and Bara, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Begalli, M Beilliere, P Belokopytov, I and Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D and Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD and Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM and Bugge, L Buran, T Burmeister, H Buytaert, JAMA and Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A and Camporesi, T Canale, V Cao, F Carroll, L Caso, C and Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerritp, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, P Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Crosetti, G Crosland, N Crozon, M and Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E and Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B Defoix, C Delikaris, D and Delorme, S Delpierre, P Demaria, N Di Ciaccio, L and Dijkstra, H Djama, F Dolbeau, J Doll, O Donszelmann, M and Doroba, K Dracos, M Drees, J Dris, M Dulinski, W and Dzhelyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G and Engel, JP Falaleev, V Fassouliotis, D Fenyuk, A and Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H and Fokitis, E Folegati, P Fontanelli, F Forsbach, H and Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J and Gasparini, U Gavillet, P Gazis, EN Gerber, JP and Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V and Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH and Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW and Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E and Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO and Holthuizen, D Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P and Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P and Jean-Marie, B Johansson, EK Johnson, D Jonker, M and Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G and Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S and Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH and Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapchine, V Lapin, V Laugier, JP and Lauhakangas, R Laurikainen, P Leder, G Ledroit, F and Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A and Lieb, E Lillethun, E Lindgren, J Lippi, I Llosa, R and Loerstad, B Lokajicek, M Loken, JG Aguera, MAL and Lopez-Fernandez, A Los, M Loukas, D Lounis, A Lozano, JJ and Lucock, R Lutz, P Lyons, L Maehlum, G Magnussen, N and Maillard, J Maltezos, A Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC Markou, A Mathis, L Motorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M and Mc Kay, R Mc Nulty, R Menichetti, E Meroni, C Meyer, WT and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL and Negri, P Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V Orava, R Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinsent, A and Pol, ME Polok, G Poropat, P Privitera, P Pullia, A and Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S and Range, WH Ratofg, PN Read, AL Redaelli, NG Regler, M and Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M and Ridky, J Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T and Ruckstuhl, W Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y and Sanchez, E Sanchez, J Sannino, M Schaeffer, M and Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M and Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smith, GR Sosnowski, R Spassoff, TS and Spiriti, E Squarcia, S Staeck, H Stanescu, C and Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stubenrauch, CI Szczekowski, M Szeptycka, M and Szymanski, P Tavernier, S Theodosiou, G Tilquin, A and Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ and Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Trischuk, W Tristram, G Troncon, C Tsirou, A and Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T and Tyapkin, IA Tyndel, M Tzamarias, S Udo, F and Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G and Velasco, J Ventura, L Venus, W Verbeure, F and Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV and Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M and Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH and Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P and Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI and Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ and Zumerle, G Zuniga, J DELPHI Collaboration
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: In four-jet events from e+e- –> Z0 –> multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle theta-NR* and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor N(C) to the fermionic Casimir operator C(F): N(C)/C(F) = 2.55 +/- 0.55(stat.) +/- 0.4(fragm. + models) +/- 0.2(error in bias) in agreement with the value 2.25 expected in QCD from N(C) = 3 and C(F) = 4/3.
Published: 1991

30. SEARCH FOR HEAVY CHARGED SCALARS IN Z0 DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T ALEKSEEV, GD and ALLABY, JV ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E APEL, WD ASMAN, B FERRERES, CA and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P and BARAO, F BARBIELLINI, G BARDIN, DY BARONCELLI, A and BARRING, O BARTL, W BATES, MJ BATYUNIA, BV BAUBILLIER, M and BECKS, KH BEESTON, CJ BEILLIERE, P BELOKOPYTOV, I and BELTRAN, P BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BOGOLUBOV, PN BOLLINI, D and BOLOGNESE, T BONAPART, M BONYUSHKIN, YE BOOTH, PSL and BORATAV, M BORGEAUD, P BORNER, H BORISOV, G BOSIO, C and BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUTTAR, CM BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC and CAMPAGNE, JE CAMPION, A CAMPORESI, T CANALE, V CAO, F and CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHICCOLI, C CHLIAPNIKOV, PV and CHOROWICZ, V CIRIO, R CLARA, MP CONTRERAS, JL CONTRI, R and COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CRESTI, M CROSETTI, G CROSLAND, N CROZON, M MAESTRO, JC and CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M and DAMGAARD, G DARBO, G DAUBIE, E DAVENPORT, M DAVID, P and DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W and DECLERCQ, C LASO, MDD DEGROOT, N DELOTTO, B and DELAVAISSIERE, C DEFOIX, C DELIKARIS, D DELPIERRE, P and DEMARIA, N DICIACCIO, L DIDDENS, AN DIJKSTRA, H DJAMA, F and DOLBEAU, J DOROBA, K DRACOS, M DREES, J DRIS, M and DULINSKI, W DZHELYADIN, R EDWARDS, DN EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G ENGEL, JP FALALEEV, V and FENYUK, A ALONSO, MF FERRER, A FERRONI, S FILIPPAS, TA and FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F and FORSBACH, H FRANEK, B FRANSSON, KE FRENKIEL, P FRIES, DC and FRUHWIRTH, R FULDAQUENZER, F FUERSTENAU, H FUSTER, J and GAGO, JM GALEAZZI, G GAMBA, D GASPARINI, U GAVILLET, P and GAWNE, S GAZIS, EN GIACOMELLI, P GLITZA, KW GOKIELI, R GOLOVATYUK, VM GOOBAR, A GOPAL, G GORSKI, M and GRACCO, V GRANT, A GRARD, F GRAZIANI, E GROS, MH and GROSDIDIER, G GROSSETETE, B GUMENYUK, S GUY, J HAHN, F and HAHN, M HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A and HAMACHER, K DEMONCHENAULT, GH HARRIS, JF HECK, B and HERBST, I HERNANDEZ, JJ HERQUET, P HERR, H HIGON, E and HILKE, HJ HOFMOKL, T HOLMES, R HOLMGREN, SO HOOPER, JE and HOULDEN, M HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D HYAMS, BD IOANNOU, P IVERSEN, PS JACKSON, JN and JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONKER, M JONSSON, L JUILLOT, P KADYROV, RB and KALKANIS, G KALMUS, G KANTARDJIAN, G KAPUSTA, F KAPUSTA, P KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KING, B KLEIN, H KLEMPT, W KLOVNING, A and KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P KOPF, M and KORATZINOS, M KORCYL, K KORYTOV, AV KORZEN, B and KOURKOUMELIS, C KREUZBERGER, T KROLIKOWSKI, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LAAKSO, MI LAMBROPOULOS, C LAMSA, JW LANCERI, L and LANGERVELD, D LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LAURIKAINEN, P LEDER, G LEDROIT, F LEMONNE, J LENZEN, G and LEPELTIER, V LETESSIERSELVON, A LIEB, E LILLESTOL, E and LILLETHUN, E LINDGREN, J LIPPI, I LLOSA, R LOERSTAD, B and LOKAJICEK, M LOKEN, JG LOPEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ LUCOCK, R LUNDJENSEN, B LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARIN, JC MARKOU, A MATHIS, L MATTEUZZI, C and MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R and MENICHETTI, E MERONI, C MEYER, WT MITAROFF, WA and MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MULLER, H MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P and NIELSEN, BS NIGRO, M NIKOLAENKO, V OBRAZTSOV, V ORAVA, R and OSTANKOV, A OURAOU, A PAIN, R PAKONSKI, K PALKA, H and PAPADOPOULOU, T PAPE, L PASINI, P PASSERI, A and PEGORARO, M PEREVOZCHIKOV, V PERNICKA, M PIMENTA, M and PINGOT, O PINORI, C PINSENT, A POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADEMAKERS, AA RADOJICIC, D RAGAZZI, S RANGE, WH RATOFF, PN and READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB and RESVANIS, LK RICHARD, F RIDKY, J RINAUDO, G RODITI, I and ROMERO, A RONCHESE, P ROSENBERG, E ROSSO, E ROUDEAU, P ROVELLI, T RUHLMANN, V RUIZ, A SAARIKKO, H SACCO, D SACQUIN, Y SANCHEZ, E SANCHIS, E SANNINO, M and SCHAEFFER, M SCHNEIDER, H SCURI, F SEBASTIA, A SEGAR, AM and SEKULIN, R SESSA, M SETTE, G SEUFERT, R SHELLARD, RC and SIEGRIST, P SIMONE, P SIMONETTI, S SIMONETTO, F and SISSAKIAN, AN SKAALI, TB SKEENS, J SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPANG, K SPASSOFF, T and SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRUB, R STUBENRAUCH, C SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P TAVERNIER, S TCHERNYAEV, E THEODOSIOU, G and TILQUIN, A TIMMERMANS, J TKATCHEV, LG TOET, DZ TOPPHOL, AK TORTORA, L TREILLE, D TREVISAN, U TRISTRAM, G and TRONCON, C TSYGANOV, EN TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UDO, F UEBERSCHAER, S UVAROV, VA VALENTI, G VALLAZZA, E and VALLS, JA VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANEIJNDHOVEN, N VANDERVELDE, C VARELA, J VAZ, P VEGNI, G VEITCH, ME VELA, E VELASCO, J VENTURA, L VENUS, W and VERBEURE, F VIBERT, L VILANOVA, D VLASOV, EV and VODOPIANOV, AS VOLLMER, M VOULGARIS, G VOUTILAINEN, M and VRBA, V WAHLEN, H WALCK, C WALDNER, F WAYNE, M and WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILLIAMS, WSC WINTER, M WORMSER, G WOSCHNAGG, K and YAMDAGNI, N ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZINCHENKO, AI ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Published: 1990

31. A COMPARISON OF JET PRODUCTION-RATES ON THE Z0 RESONANCE TO PERTURBATIVE QCD

Author: ABREU, P Adam, W Adami, F Adye, T Alexeev, GD and Allaby, JV Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Ferreres, CA and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Beilliere, P Belokopytov, I Beltran, P and Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S and Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T and Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borisov, G and Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M and Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buttar, C Buytaert, JAMA Caccia, M and Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T and Canale, V Cao, F Carroll, L Caso, C Castelli, E and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, P Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Cresti, M Crosetti, G Crosland, N and Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N and De La Vaissiere, C De Lotto, B De Min, A Defoix, C and Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R and Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G and Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A and Ferroni, S Filippas, TA Firestone, A Foeth, H and Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Fruhwirth, R Fulda-Quenzer, F and Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D and Gasparini, U Gavillet, P Gawne, S Gazis, EN and Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Goobar, A Gopal, G Gorski, M Gotra, YN Gracco, V and Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, B Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M and Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD and Ioannou, P Iversen, PS Jackson, JN Jalocha, P and Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G and Kalmus, G Kantardjian, G Kapusta, F Kapusta, P and Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Klein, H Klempt, W Klovning, A and Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M and Koratzinos, M Korcyl, K Korzen, B Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J and Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E and Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R and Loerstad, B Lokajicek, M Loken, JG Aguera, MAL and Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R and Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Maillard, J and Maltezos, A Mandl, F Marco, J Marin, JC Markou, A and Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muller, H Myatt, G Naraghi, F Nau-Korzen, U and Navarria, FL Negri, P Nielsen, BS Nigro, M Nikolaenko, V and Obraztsov, V Odegaard, T Orava, R Ostankov, A and Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L and Pasini, P Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Pimenta, M Pingot, O Pinori, C Pinsent, A and Pol, ME Polok, G Poropat, P Pozdnyakov, VN and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E and Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H and Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A and Sedykh, YV Segar, AM Sekulin, R Sessa, M Sette, G and Seufert, R Shellard, RC Siegrist, P Simonetti, S and Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S and Staeck, H Staeck, C Stavropoulos, G Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stubenrauch, CJ and Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S and Tchernyaev, E Theodosiou, G Tilquin, A Timmermans, J and Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Treille, D and Trevisan, U Tristram, G Troncon, C Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Veitch, ME and Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevskiy, NK Vishnevskiy, EV and Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M and Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M and Weilhammer, P Werner, J Wetherell, AM Wickens, JH and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R and Funchal, RZ Zumerle, G Zuniga, J
Published: 1990

32. A SEARCH FOR SLEPTONS AND GAUGINOS IN Z0 DECAYS

Author: Abreu, P Adam, W Adami, F Adye, T Alexeev, GD and Allaby, JV Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Ferreres, CA and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Beilliere, P Belokopytov, I Beltran, P and Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S and Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T and Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borisov, G and Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M and Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buttar, C Buytaert, JAMA Caccia, M and Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T and Canale, V Cao, F Carroll, L Caso, C Castelli, E and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, P Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Cresti, M Crosetti, G Crosland, N and Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Davenport, E David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C De Fez Laso, MDM De Groot, N De La Vaissiere, C De Lotto, B De Min, A and Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J and Doroba, K Dracos, M Drees, J Dris, M Dulinski, W and Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T and Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A and Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B and Fransson, KE Frenkiel, P Fries, DC Fruhwirth, R and Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM and Galeazzi, G Gamba, D Gasparini, U Gavillet, P Gawne, S and Gazis, EN Giacomelli, P Glitza, KW Gokieli, R and Golovatyuk, VM Goobar, A Gopal, G Gorski, M Gotra, YN and Gracco, V Grant, A Grard, F Graziani, E Gros, MH and Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F and Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A and Hamacher, K De Monchenault, GH Harris, FJ Heck, B and Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E and Hilke, HJ Hofmokl, T Holmes, R Holmgren, SO Hooper, JE and Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN and Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB and Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Klein, H Klempt, W Klovning, A and Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M and Koratzinos, M Korcyl, K Korzen, B Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J and Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E and Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R and Loerstad, B Lokajicek, M Loken, JG Aguera, MAL and Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R and Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Maillard, J and Maltezos, A Mandl, F Marco, J Marin, JC Markou, A and Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muller, H Myatt, G Naraghi, F Nau-Korzen, U and Navarria, FL Negri, P Nielsen, BS Nigro, M Nikolaenko, V and Obraztsov, V Odegaard, T Orava, R Ostankov, A and Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L and Pasini, P Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Pimenta, M Pingot, O Pinori, C Pinsent, A and Pol, ME Polok, G Poropat, P Pozdnyakov, VN and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E and Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H and Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A and Sedykh, YV Segar, AM Sekulin, R Sessa, M Sette, G and Seufert, R Shellard, RC Siegrist, P Simonetti, S and Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S and Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stubenrauch, CJ and Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S and Tchernyaev, E Theodosiou, G Tilquin, A Timmermans, J and Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Treille, D and Trevisan, U Tristram, G Troncon, C Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Veitch, ME and Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevskiy, NK Vlasov, EV and Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M and Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M and Weilhammer, P Werner, J Wetherell, AM Wickens, JH and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R and Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Published: 1990

33. ENERGY ENERGY CORRELATIONS IN HADRONIC FINAL-STATES FROM Z0 DECAYS

Author: Abreu, P Adam, W Adami, F Ayde, T Alekseev, GD and Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U and Anassontzis, E Apel, WD Asman, B Astier, P Augustinus, JE Augustinus, A Baillon, P Bambade, P Barao, F and Barbiellini, G Bardin, DY Baroncelli, A Barring, O and Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ and Beilliere, P Belokopytov, I Beltran, P Benedic, D and Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F and Bibby, JH Bilenky, MS Billoir, P Biarne, J Bloch, D and Bogolubov, PN Bollini, D Bolognese, T Bonapart, M and Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H and Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S and Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V and Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC and Cattai, A Cavallo, FR Cerrito, L Charpentier, P and Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P and Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R and Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC and Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M and Damgaard, G Darbo, G Daubie, E Dauncey, PD and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C and Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O and Doroba, K Dracos, M Drees, J Dris, M Dulinski, W and Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T and Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonzo, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A and Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC and Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H and Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J and Gasparini, U Gavillet, P Gawne, S Gazis, EN Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY and Goobar, A Gopal, G Gorski, M Gouz, Y Gracco, V and Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, B Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE and Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN and Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB and Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W and Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P and Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kourkoumelis, C Kreuzberger, T Kreuzberger, J and Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K and Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V and Laugier, JP Lauhakangas, R Laurikainen, P Leder, G and Ledroit, F Lemonne, J Lenzen, G Lepeltier, V and Letessier-Selvon, A Lieb, E Lillestol, E Lillethun, E and Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG and Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ and Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G and Magnussen, N Maillard, J Maltezos, A Mandl, F Marco, J and Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R and Menichetti, E Meroni, C Meyer, WT Mitaroff, WA and Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P and Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R and Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T and Pape, L Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C and Pinsent, A Pol, ME Poliakov, B Polok, G Poropat, P and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E and Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H and Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A and Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R and Shellard, RC Siegrist, P Simonetti, S Simonetto, F and Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K and Spassoff, T Spiriti, E Squaricia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M and Szymanski, P Tavernier, S Theodosiou, G Tilquin, A and Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ and Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Tristram, G Troncon, C Tsirou, A Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J and Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV Vodopyanov, AS Vollmer, M and Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C and Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J and Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: We have studied the energy-energy angular correlations in hadronic final states from Z0 decay using the DELPHI detector at LEP. From a comparison with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation we find that Lambda-MS(5) = 104(-20)+25(stat.)-20(+25)(syst.)-00(+30)(theor.) MeV, which corresponds to alpha-s(91 GeV) = 0.106 +/- 0.003(stat.) +/- 0.003(syst.)-0.000(+0.003)(theor.). The theoretical error stems from different choices for the renormalization scale of alpha-s. In the Monte Carlo simulation the scale of alphA-s as well as the fragmentation parameters have been optimized to described reasonably well as aspects of multihadron production.
Published: 1990

34. SEARCH FOR THE T AND B' QUARKS IN HADRONIC DECAYS OF THE Z0 BOSON

Author: ABREU, P ADAM, W ADAMI, F ADYE, T ALEKSEEV, GD and ALLABY, JV ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E APEL, WD ASMAN, B FERRERES, CA and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P and BARAO, F BARBIELLINI, G BARDIN, DY BARONCELLI, A and BARRING, O BARTL, W BATES, MJ BATYUNIA, BV BAUBILLIER, M and BECKS, KH BEESTON, CJ BEILLIERE, P BELOKOPYTOV, I and BELTRAN, P BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BOGOLUBOV, PN BOLLINI, D and BOLOGNESE, T BONAPART, M BONYUSHKIN, YE BOOTH, PSL and BORATAV, M BORGEAUD, P BORNER, H BOSIO, C BOTNER, O and BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD and BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T BURMEISTER, H BUTTAR, CM and BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPAGNE, JE CAMPION, A CAMPORESI, T CANALE, V CAO, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, MVC CATTAI, A and CAVALLO, FR CERRITO, L CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHLIAPNIKOV, PV CHOROWICZ, V and CIRIO, R CLARA, MP CONTRERAS, JL CONTRI, R COSME, G and COUCHOT, F CRAWLEY, HB CRENNELL, D CRESTI, M CROSETTI, G and CROSLAND, N CROZON, M MAESTRO, JC CZELLAR, S and DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G and DARBO, G DAUBIE, E DAVENPORT, M DAVID, P DEANGELIS, A DEBEER, M DEBOECK, H DEBOER, W DECLERCQ, C and DEFEZLASO, MDM DEGROOT, N DELAVAISSIERE, C DELOTTO, B and DEFOIX, C DELIKARIS, D DELPIERRE, P DEMARIA, N and DICIACCIO, L DIDDENS, AN DIJKSTRA, H DJAMA, F DOLBEAU, J and DOROBA, K DRACOS, M DREES, J DRIS, M DULINSKI, W and DZHELYADIN, R EDWARDS, DN EEK, LO EEROLA, PAM EKELOF, T and EKSPONG, G ENGEL, JP FALALEEV, V FENYUK, A ALONSO, MF FERRER, A FERRONI, S FILIPPAS, TA FIRESTONE, A and FOETH, H FOKITIS, E FONTANELLI, F FORSBACH, H FRANEK, B and FRANSSON, KE FRENKIEL, P FRIES, DC FRUHWIRTH, R and FULDAQUENZER, F FUERSTENAU, H FUSTER, J GAGO, JM and GALEAZZI, G GAMBA, D GASPARINI, U GAVILLET, P GAWNE, S and GAZIS, EN GIACOMELLI, P GLITZA, KW GOKIELI, R and GOLOVATYUK, VM GOOBAR, A GOPAL, G GORSKI, M GOUZ, Y and GRACCO, V GRANT, A GRARD, F GRAZIANI, E GRITSAENKO, JA and GROS, MH GROSDIDIER, G GROSSETETE, B GUMENYUK, S and GUY, J HAHN, F HAHN, M HAIDER, S HAJDUK, Z and HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HARRIS, JF HECK, B HERBST, I HERNANDEZ, JJ HERQUET, P and HERR, H HIGON, E HILKE, HJ HOFMOKL, T HOLMES, R and HOLMGREN, SO HOOPER, JE HOULDEN, M HRUBEC, J HULTH, PO and HULTQVIST, K HUSSON, D HYAMS, BD IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G JARRY, P and JEANMARIE, B JOHANSSON, EK JONKER, M JONSSON, L JUILLOT, P KADYROV, RB KADYSHEVSKY, VG KALKANIS, G KALMUS, G and KANTARDJIAN, G KAPUSTA, F KAPUSTA, P KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, BA KING, B KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P KOEHNE, JH and KOENE, B KOKKINIAS, P KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KORZEN, B KOSTRIKOV, M KOURKOUMELIS, C and KREUZBERGER, T KROLIKOWSKI, J KRUENERMARQUIS, U KRUPINSKI, W and KUCEWICZ, W KURVINEN, K LAAKSO, MI LAMBROPOULOS, C and LAMSA, JW LANCERI, L LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LAURIKAINEN, P LEDER, G LEDROIT, F LEMONNE, J and LENZEN, G LEPELTIER, V LETESSIERSELVON, A LICHTENWAGNER, PK and LIEB, E LILLESTOL, E LILLETHUN, E LINDGREN, J LIPPI, I LLOSA, R LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ LUCOCK, R and LUNDJENSEN, B LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J and MALTEZOS, A MANDL, F MARCO, J MARIN, JC MARKOU, A and MATHIS, L MATTEUZZI, C MATTHIAE, G MAZZUCATO, M and MCCUBBIN, M MCKAY, R MENICHETTI, E MERONI, C MEYER, WT and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MULLER, H MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P NIELSEN, BS NIGRO, M NIKOLAENKO, V and OBRAZTSOV, V ORAVA, R OURAOU, A PAIN, R PAKONSKI, K and PALKA, H PAPADOPOULOU, T PAPE, L PASINI, P PASSERI, A and PEGORARO, M PEREVOZCHIKOV, V PERNICKA, M PIMENTA, M and PINGOT, O PINORI, C PINSENT, A POL, ME POLOK, G and POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADEMAKERS, AA RADOJICIC, D RAGAZZI, S RANGE, WH RATOFF, PN and READ, AL REDAELLI, NG REGLER, M REID, D RENTON, PB and RESVANIS, LK RICHARD, F RIDKY, J RINAUDO, G RODITI, I and ROMERO, A RONCHESE, P ROSENBERG, E ROSSI, U ROSSO, E and ROUDEAU, P TOVELLI, T RUHLMANN, V RUIZ, A SAARIKKO, H SACCO, D SACQUIN, Y SADOVSKY, AB SANCHEZ, E and SANCHIS, E SANNINO, M SCHAEFFER, M SCHNEIDER, H SCURI, F and SEBASTIA, A SEGAR, AM SEKULIN, R SESSA, M SETTE, G and SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S and SIMONETTO, F SKAALI, TB SKEENS, J SKJEVLING, G SMADJA, G and SMITH, GR SOSNOWSKI, R SPANG, K SPASSOFF, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAVROPOULOS, G and STICHELBAUT, F STOCCHI, A STRAUSS, J STRUB, R and STUBENRAUCH, C SZCZEKOWSKI, M SZEPTYCKA, M SZYMANSKI, P and TAVERNIER, S THEODOSIOU, G TILQUIN, A TIMMERMANS, J and TKATCHEV, LG TOET, DZ TOPPHOL, AK TORTORA, L TREILLE, D and TREVISAN, U TRISTRAM, G TRONCON, C TSYGANOV, EN and TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UDO, F UEBERSCHAER, S UVAROV, VA VALENTI, G VALLAZZA, E VALLS, JA VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VANEIJNDHOVEN, N VANDERVELDE, C and VARELA, J VAZ, P VEGNI, G VEITCH, ME VELA, E and VELASCO, J VENTURA, L VENUS, W VERBEURE, F VIBERT, L and VILANOVA, D VLASOV, EV VODOPIANOV, AS VOLLMER, M and VOULGARIS, G VOUTILAINEN, M WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM and WICKENS, JH WIKNE, J WILLIAMS, WSC WINTER, M WORMALD, D and WORMSER, G WOSCHNAGG, K YAMDAGNI, N YEPES, P and ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZEVGOLATAKOS, E and ZHANG, G ZIMIN, NI ZINCHENKO, AI ZITOUN, R FUNCHAL, RZ and ZUMERLE, G ZUNIGA, J
Published: 1990

35. STUDY OF HADRONIC DECAYS OF THE Z0 BOSON

Author: AARNIO, P ABREU, P ADAM, W ADAMI, F ADRIANOS, P and ADYE, T ALEKSEEV, GD ALLABY, JV ALLEN, P ALLPORT, P and ALMEHED, S ALVSVAAG, SJ AMALDI, U ANASSONTZIS, E and ANTILOGUS, P APEL, WD ASMAN, B ASTESAN, F FERRERES, CA and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BARAO, F and BARBIELLINI, G BARDIN, DY BARLAG, S BARLOW, J and BARONCELLI, A BARRANCOLUQUE, M BARREIRA, G BARRING, O and BARTL, W BATES, MJ BAUBILLIER, M BECKS, KH BEESTON, CJ and BELL, W BELOKOPYTOV, J BELTRAN, P BENEDIC, D and BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S BIANCHI, F and BIBBY, JH BILENKY, M BILLOIR, P BINGEFORS, N BJARNE, J BLOCH, D BOGOLUBOV, PN BOLLINI, D BOLOGNESE, T and BONAPART, M BOOTH, PSL BORATAV, M BORGEAUD, P BORISOV, G and BORNER, H BOSIO, C BOTNER, O BOUQUET, B BOZZO, M and BRAIBANT, S BRANCHINI, P BRAND, C BRAND, KD BRICMAN, C and BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUTTAR, C BUYTAERT, JAMA CABRAS, G and CACCIA, M CAIRANTI, S CALVI, M ROZAS, AJC CAMPAGNE, JE and CAMPION, A CAMPORESI, T CANALE, V CARROLL, L CASO, C and CASTELLI, E GIMENEZ, VC CATTAI, A CAVALLO, FR and CERRITO, L CHADWICK, G CHARPENTIER, P CHECCHIA, P and CHELKOV, GA CHEVALIER, L CHICCOLI, C CHLIAPNIKOV, PV and CHOROWICZ, V CIRIO, R CLARA, MP CONTRERAS, JL CONTRI, R and COUCHOT, F CRAWLEY, HB CRENNELL, D CRESTI, M and CROSETTI, G CROSLAND, N CROZON, M MAESTRO, JC CURWEN, LS and DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E DAVENPORT, M DEANGELIS, A DEBEER, M and DECLERCQ, C DEGROOT, N DELAVAISSIERE, C DELIKARIS, D and DELPIERRE, P DICIACCIO, L DIDDENS, AN DIJKSTRA, H and DIMITRIOU, N DJAMA, F DOLBEAU, J DOROBA, K DOWNS, R and DRACOS, M DREES, J DRIS, M DU, S DULINSKI, W and DZHELYADIN, R EDWARDS, DN EEK, LO EEROLA, PAM EKELOF, T and EKSPONG, G ELLILA, M ENGEL, JP FALALEEV, V FENYUK, A and ALONSO, MF FERRER, A FERRONI, S FILIPPAS, TA and FIRESTONE, A FISCHER, HG FLINN, M FOETH, H FOKITIS, E and FOLEGATI, P FONTANELLI, F FORSBACH, H FRAISSARD, D and FRANEK, B FRANSSON, KE FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FUSTER, J GAGO, JM and GAILLARD, M GALEAZZI, G GAMBA, D GASPAR, C GASPARINI, U and GAVILLET, P GAWNE, S GAZIS, EN GENAT, JF GERBER, JP and GLITZA, KW GOKIELI, R GOLOVATYUK, VM GOMES, P and CADENAS, JJGY GOOBAR, A GOPAL, G GORBICS, M GORET, B and GORSKI, M GOUJON, G GRACCO, V GRANT, A GRARD, F and GRAZIANI, E GRILLET, JP GROS, MH GROS, M GROSDIDIER, G and GROSSETETE, B GRUNG, B GUGLIELMI, L GUMENYUK, S GUY, J HAHN, F HAHN, M HAIDER, S HAISSINSKI, J HAJDUK, Z and HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH and HARRIS, F HECK, B HERBST, I HERNANDEZ, JJ HERQUET, P and HERR, H HIGON, E HILKE, HJ HOFMANN, H HOFMOKL, T and HOLMGREN, SO HOOPER, JE HORISBERGER, R HOULDEN, M and HRISOHO, A HRUBEC, J HUITU, K HULTH, PO HULTQVIST, K and HUSSON, D HYAMS, BD IMBAULT, D INNOCENTE, M IOANNOU, P and IVERSEN, PS JACKSON, JN JALOCHA, P JARLSKOG, G and JARRY, P JEANMARIE, B JOENSUU, J JOHANSSON, EK and JOHANSSON, H JOHANSSON, S JONKER, M JUILLOT, P KADYROV, RB KALKANIS, G KALMUS, G KANTARDJIAN, G KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KESTEMAN, J KHOMENKO, B and KHOVANSKI, NN KING, B KISIELEWSKI, B KLEIN, H KLEMPT, W and KLOVNING, A KOENE, B KOKKINIAS, P KONTAXIS, I KOPF, M KORATZINOS, M KORCYL, K KORZEN, B KOSTARAKIS, P and KOURKOUMELIS, C KREUZBERGER, T KROLIKOWSKI, J KRSTIC, J and KRUENERMARQUIS, U KUCEWICZ, W KUHN, G KURVINEN, K and LAAKSO, MI LAMBROPOULOS, C LANCERI, L LANGERVELD, D and LAPCHINE, V LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LAURIKAINEN, P LAVIGNE, B LEGRAND, JC LEBBOLO, H LEDER, G LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A and LIDBURY, JA LIEB, E LILLESTOL, E LILLETHUN, E LIPPI, I LLOSA, R LOERSTAD, B LOKAJICEK, M LOKEN, JG and AGUERA, MAL LORENZ, P LOUKAS, D LUCOCK, R LUNDJENSEN, B and LUTZ, P LYONS, L MAEHLUM, G MAELAND, O MAILLARD, J and MALTEZOS, A MALTEZOS, S MANDL, F MARCO, J MARIN, JC and MARKOU, A MAS, J MATHIS, L MATTEUZZI, C MATTHIAE, G and MATTSSON, L MAZZUCATO, M MCCUBBIN, M MCKAY, R and MENICHETTI, E MERONI, C MEYER, WT MICHALOWSKI, J and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MULLER, H MUR, M MURYN, B MYATT, G NAVARRIA, FL and NEGRI, P NIELSEN, BS NIGRO, M NIKOLAENKO, V NONNI, M and NOPPE, JM NORDBERG, M NOUNOS, S OBRAZTSOV, V ODEGAARD, T and ORAVA, R OURAOU, A PAGOT, J PAIN, R PAKONSKI, K and PALKA, H LOPES, SP PAPADOPOULOU, T PAPE, L PASINI, P and PASSENEAU, M PASSERI, A PATTISON, JB PEGORARO, M and PEREVOZCHIKOV, V PEREZ, J PERNICKA, M PERROTTA, A and PETRUCCI, G PETTERSEN, T PIMENTA, M PINGOT, O PINORI, C and PINSENT, A POIRET, C POL, ME POLOK, G POROPAT, P and PRIVITERA, P PULLIA, A PYYHTIA, J QUERU, P QUINTON, S and RADEMAKERS, AA RADOJICIC, D RAGAZZI, S RAGAZZON, R and RANGE, WH RAOUL, JC RATOFF, P READ, AL REDAELLI, NG and REGLER, M REID, D REIS, MV RENTON, P RESVANIS, LK and RICHARD, F RINAUDO, G ROMAYA, AM ROMERO, A RONCAGLIOLO, I RONCHESE, P RONGVED, R ROSENBERG, E ROSSEL, F and ROSSO, E ROUDEAU, P ROVELLI, T RUHLMANN, V RUIZ, A and RYBICKI, K SAARIKKO, H SACCO, D SACQUIN, Y SADOVSKY, A and SALGADO, CW SALT, J SAMARIN, A SANCHEZ, E SANCHIS, E and SANNINO, M SCHAEFFER, M SCHNEIDER, H SCURI, F and SEBASTIA, A SEDYKH, YV SEGAR, AM SEKULIN, R SESSA, M and SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB SKEENS, J and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPANG, K and SPASSOV, T SPENTZOURIS, P SPIRITI, E SQUARCIA, S and STAECK, H STANESCU, C STAVROPOULOS, G STICHELBAUT, F and STOCCHI, A STRAUSS, J STRUB, R SUNDELL, E SZCZEKOWSKI, M and SZEPTYCKA, M SZYMANSKI, P TAVERNIER, S TCHERNIAEV, E and THEODOSIOU, G TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKACHEV, LG TOET, DZ TOPPJORGENSEN, S TOPPHOL, AK and TORTORA, L TREILLE, D TREVISAN, U TRISTRAM, G TRONCON, C and TRUONG, TK TSYGANOV, EN TURALA, M TURCHETTA, R and TURLUER, ML TUUVA, T TYAPKIN, I TYNDEL, M UDO, F and UEBERSCHAER, S ULLALAND, O UVAROV, VA VALENTI, G and VANAPELDOORN, GW VANDAM, P VANDONINCK, WK VANEIJK, B and VANEIJNDHOVEN, N VANDERVELDE, C VANUXEM, JP VARELA, J and VAZ, P VEGNI, G VEITCH, ME VELA, E VELASCO, J and VENTURA, L VENUS, W VERTOGRADOV, L VILANOVA, D MELO, LV and VLASOV, EV VODOPIANOV, AS VOLLMER, M VOULGARIS, G and VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F and WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM WICKENS, JH WILLIAMS, WSC WINTER, M WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YELTON, JM ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI ZITO, M ZITOUN, R FUNCHAL, RZ ZUMERLE, G
Published: 1990

36. A STUDY OF INTERMITTENCY IN HADRONIC Z0 DECAYS

Author: Abreu, P Adam, W Adami, F Adye, T Alexeev, GD and Allaby, JV Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Ferreres, CA and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Beilliere, P Belokopytov, I Beltran, P and Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S and Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T and Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borisov, G and Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M and Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buttar, C Buytaert, JAMA Caccia, M and Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T and Canale, V Cao, F Carroll, L Caso, C Castelli, E and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, P Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Cresti, M Crosetti, G Crosland, N and Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N and De La Vaissiere, C De Lotto, B De Min, A Defoix, C and Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R and Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G and Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A and Ferroni, S Filippas, TA Firestone, A Foeth, H and Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Fruhwirth, R Fulda-Quenzer, F and Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D and Gasparini, U Gavillet, P Gawne, S Gazis, EN and Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Goobar, A Gopal, G Gorski, M Gotra, YN Gracco, V and Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, B Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M and Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD and Ioannou, P Iversen, PS Jackson, JN Jalocha, P and Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G and Kalmus, G Kantardjian, G Kapusta, F Kapusta, P and Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Klein, H Klempt, W Klovning, A and Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M and Koratzinos, M Korcyl, K Korzen, B Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J and Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E and Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R and Loerstad, B Lokajicek, M Loken, JG Aguera, MAL and Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R and Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Maillard, J and Maltezos, A Mandl, F Marco, J Marin, JC Markou, A and Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muller, H Myatt, G Naraghi, F Nau-Korzen, U and Navarria, FL Negri, P Nielsen, BS Nigro, M Nikolaenko, V and Obraztsov, V Odegaard, T Orava, R Ostankov, A and Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L and Pasini, P Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Pimenta, M Pingot, O Pinori, C Pinsent, A and Pol, ME Polok, G Poropat, P Pozdnyakov, VN and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E and Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H and Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A and Sedykh, YV Segar, AM Sekulin, R Sessa, M Sette, G and Seufert, R Shellard, RC Siegrist, P Simonetti, S and Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S and Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stubenrauch, CJ and Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S and Tchernyaev, E Theodosiou, G Tilquin, A Timmermans, J and Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Treille, D and Trevisan, U Tristram, G Troncon, C Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Veitch, ME and Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevskiy, NK Vlasov, EV and Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M and Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M and Weilhammer, P Werner, J Wetherell, AM Wickens, JH and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R and Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Published: 1990

37. SEARCH FOR LIGHT NEUTRAL HIGGS PARTICLES PRODUCED IN Z0-DECAYS

Author: Abreu, P Adam, W Adami, F Adye, T Alekseev, GD and Allaby, JV Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Ferreres, CA and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Beilliere, P Belokopytov, I Beltran, P and Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S and Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T and Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borner, H and Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S and Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buttar, CM Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T and Canale, V Cao, F Carroll, L Caso, C Castelli, C and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, PV Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Cresti, M Crosetti, G Crosland, N and Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E D'Almagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N and De La Vaissiere, C De Lotto, B Defoix, C Delikaris, D and Delpierre, P Demaria, N Denisenko, KG Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R and Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G and Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A and Ferroni, S Filippas, TA Firestone, A Foeth, H and Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Fruhwirth, R Fulda-Quenzer, F and Fuerstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Gasparini, U Gavillet, P Gawne, S Gazis, EN and Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Goobar, A Gopal, G Gorski, M Gracco, V Grant, A and Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S and Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, JF Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hofmokl, T and Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD and Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M and Jonsson, L Juillot, P Kadyrov, RB Kadyshevski, VG and Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F and Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Klein, H Klempt, W Klovning, A and Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M and Koratzinos, M Korcyl, K Korzen, B Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Kurpinski, W Kucewicz, W Kurvinen, K Laakson, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapchine, V Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F and Lemonne, J Lensen, G Lepeltier, V Letessier-Selvon, A and Lieb, E Lillestol, E Lillethun, E Lindgren, J Lippi, I and Llosa, R Loerstad, B Lokajicek, M Loken, JG Lopez, A and Aguera, MAL Loukas, D Lozano, JJ Lucock, R and Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Maltezos, A and Mandl, F Marco, J Marin, JC Markou, A Matteuzzi, C and Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R and Menichetti, E Meroni, C Meyer, WT Mitaroff, WA and Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P and Nielsen, BS Nigro, M Nikolaenko, V Obraztsov, V Orava, R and Ouraou, A Pain, R Pakonski, K Palka, H Papadopoulou, T Pape, L Pasini, P Passeri, A Pegoraro, M and Perevozchikov, V Pernicka, M Pimenta, M Pingot, O and Pinori, C Pinsent, A Pol, ME Poliakov, B Polok, G and Poropat, P Pozdniakov, VN Privitera, P Pullia, A and Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J and Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, E and Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V and Ruiz, A Saarikko, H Sacco, D Sacquin, Y Sanchez, E and Sanchis, E Sannino, M Schaeffer, M Schneider, H and Scuri, F Sebastia, A Sedykh, YN Segar, AM Sekulin, R and Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P and Simonetti, S Simonetto, F Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spiriti, E Squarcia, S Staeck, H and Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A and Strauss, J Strub, R Stubenrauch, C Szczekowski, M and Szeptycka, M Szymanski, P Tavernier, S Theodosiou, G and Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG and Todorov, T Toet, DZ Topphol, AK Tortora, L Treille, D and Trevisan, U Tristram, G Troncon, C Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Valls, JA Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Veitch, ME Vela, E Velasco, J Ventura, L Venus, W Verbeure, F Vibert, L Vilanova, D Vlasov, EV Vodopianov, AS Vollmer, M and Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C and Waldner, F Wayne, M Weilhammer, P Werner, J and Wetherell, AM Wickens, JH Wikne, J Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N and Yepes, P Zaitsev, A Zalewska, A Zalewski, P and Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ and Zumerle, G Zuniga, J DELPHI Collaboration
Published: 1990

38. SEARCH FOR PAIR PRODUCTION OF NEUTRAL HIGGS BOSONS IN Z0 DECAYS

Author: ABREU, P ADAM, W ADAMI, F ADYE, T ALEKSEEV, GD and ALLABY, JV ALLEN, P ALMEHED, S ALTED, F ALVSVAAG, SJ and AMALDI, U ANASSONTZIS, E APEL, WD ASMAN, B FERRERES, CA and AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P and BARAO, F BARBIELLINI, G BARDIN, DY BARONCELLI, A and BARRING, O BARTL, W BATES, MJ BAUBILLIER, M BECKS, KH and BEESTON, CJ BEILLIERE, P BELOKOPYTOV, I BELTRAN, P and BENEDIC, D BENLLOCH, JM BERGGREN, M BERTRAND, D BIAGI, S and BIANCHI, F BIBBY, JH BILENKY, MS BILLOIR, P BJARNE, J BLOCH, D BOGOLUBOV, PN BOLLINI, D BOLOGNESE, T and BONAPART, M BOOTH, PSL BORATAV, M BORGEAUD, P BORNER, H and BOSIO, C BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S and BRANCHINI, P BRAND, KD BRENNER, RA BRICMAN, C BROWN, RCA BRUMMER, N BRUNET, JM BUGGE, L BURAN, T and BURMEISTER, H BUTTAR, CM BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPAGNE, JE CAMPION, A CAMPORESI, T and CANALE, V CAO, F CARROLL, L CASO, C CASTELLI, E and GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L and CHARPENTIER, P CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHLIAPNIKOV, PV CHOROWICZ, V CIRIO, R CLARA, MP and CONTRERAS, JL CONTRI, R COSME, G COUCHOT, F CRAWLEY, HB and CRENNELL, D CRESTI, M CROSETTI, G CROSLAND, N and CROZON, M MAESTRO, JC CZELLAR, S DAGORET, S DAHLJENSEN, E DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAVENPORT, M DAVID, P DEANGELIS, A DEBEER, M and DEBOECK, H DEBOER, W DECLERCQ, C LASO, MDMD DEGROOT, N and DELAVAISSIERE, C DELOTTO, B DEFOIX, C DELIKARIS, D and DELPIERRE, P DEMARIA, N DEMIN, A DICIACCIO, L DIDDENS, AN DIJKSTRA, H DJAMA, F DOLBEAU, J DOROBA, K DRACOS, M DREES, J DRIS, M DULINSKI, W DZHELYADIN, R and EDWARDS, DN EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G and ENGEL, JP FALALEEV, V FENYUK, A ALONSO, MF FERRER, A and FERRONI, S FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E and FONTANELLI, F FORSBACH, H FRANEK, B FRANSSON, KE and FRENKIEL, P FRIES, DC FRUHWIRTH, R FULDAQUENZER, F and FUERSTENAU, H FUSTER, J GAGO, JM GALEAZZI, G GAMBA, D and GASPARINI, U GAVILLET, P GAWNE, S GAZIS, EN and GIACOMELLI, P GLITZA, KW GOLIELI, R GOLOVATYUK, VM and GOOBAR, A GOPAL, G GORSKI, M GRACCO, V GRANT, A and GRARD, F GRAZIANI, E GROS, MH GROSDIDIER, G GROSSETETE, B GUMENYUK, S GUY, J HAHN, F HAHN, M HAIDER, S and HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K and DEMONCHENAULT, GH HARRIS, JF HECK, B HERBST, I and HERNANDEZ, JJ HERQUET, P HERR, H HIGON, E HILKE, HJ and HOFMOKL, T HOLMES, R HOLMGREN, SO HOOPER, JE HOULDEN, M and HRUBEC, J HULTH, PO HULTQVIST, K HUSSON, D HYAMS, BD and IOANNOU, P IVERSEN, PS JACKSON, JN JALOCHA, P and JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONKER, M JONSSON, L JUILLOT, P KADYROV, RB KALKANIS, G and KALMUS, G KANTARDJIAN, G KAPUSTA, F KAPUSTA, P and KATSANEVAS, S KATSOUFIS, EC KERANEN, R KESTEMAN, J and KHOMENKO, BA KING, B KJAER, NJ KLEIN, H KLEMPT, W and KLOVNING, A KLUIT, P KOEHNE, JH KOENE, B KOKKINIAS, P and KOPF, M KORATZINOS, M KORCYL, K KORYTOV, AV KORZEN, B KOURKOUMELIS, C KREUZBERGER, T KROLIKOWSKI, J and KRUENERMARQUIS, U KRUPINSKI, W KUCEWICZ, W KURVINEN, K and LAAKSO, MI LAMBROPOULOS, C LAMSA, JW LANCERI, L LAPIN, V and LAUGIER, JP LAUHAKANGAS, R LAURIKAINEN, P LEDER, G and LEDROIT, F LEMONNE, J LENZEN, G LEPELTIER, V and LETESSIERSELVON, A LIEB, E LILLESTOL, E LILLETHUN, E and LINDGREN, J LIPPI, I LLOSA, R LOERSTAD, B LOKAJICEK, M and LOKEN, JG LOPEZ, A AGUERA, MAL LOUKAS, D LOZANO, JJ and LUCOCK, R LUNDJENSEN, B LUTZ, P LYONS, L MAEHLUM, G and MAILLARD, J MALTEZOS, A MANDL, F MARCO, J MARIN, JC and MARKOU, A MATHIS, L MATTEUZZI, C MATTHIAE, G and MAZZUCATO, M MCCUBBIN, M MCKAY, R MENICHETTI, E MERONI, C MEYER, WT MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U and MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P and MUELLER, H MULLER, H MYATT, G NARAGHI, F NAUKORZEN, U NAVARRIA, FL NEGRI, P NIELSEN, BS NIGRO, M and NIKOLAENKO, V OBRAZTSOV, V ORAVA, R OURAOU, A PAIN, R and PAKONSKI, K PALKA, H PAPADOPOULOU, T PAPE, L PASINI, P PASSERI, A PEGORARO, M PEREVOZCHIKOV, V PERNICKA, M and PIMENTA, M PINGOT, O PINORI, C PINSENT, A POL, ME and POLIAKOV, B POLOK, G POROPAT, P PRIVITERA, P PULLIA, A PYYHTIA, J RADEMAKERS, AA RADOJICIC, D RAGAZZI, S and RANGE, WH RATOFF, PN READ, AL REDAELLI, NG REGLER, M and REID, D RENTON, PB RESVANIS, LK RICHARD, F RIDKY, J and RINAUDO, G RODITI, I ROMERO, A RONCHESE, P ROSENBERG, E and ROSSI, U ROSSO, E ROUDEAU, P ROVELLI, T RUHLMANN, V and RUIZ, A SAARIKKO, H SACQUIN, Y SANCHEZ, E SANCHEZ, J and SANCHIS, E SANNINO, M SCHAEFFER, M SCHNEIDER, H and SCURI, F SEBASTIA, A SEGAR, AM SEKULIN, R SESSA, M and SETTE, G SEUFERT, R SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F SISSAKIAN, AN SKAALI, TB SKEENS, J and SKJEVLING, G SMADJA, G SMITH, GR SOSNOWSKI, R SPANG, K and SPASSOFF, T SPIRITI, E SQUARCIA, S STAECK, H and STANESCU, C STAVROPOULOS, G STICHELBAUT, F STOCCHI, A and STRAUSS, J STRUB, R STUBENRAUCH, C SZCZEKOWSKI, M and SZEPTYCKA, M SZYMANSKI, P TAVERNIER, S TCHERNYAEV, E and THEODOSIOU, G TILQUIN, A TIMMERMANS, J TIMOFEEV, VG and TKATCHEV, LG TOET, DZ TOPPHOL, AK TORTORA, L TREILLE, D and TREVISAN, U TRISTRAM, G TRONCON, C TSYGANOV, EN and TURALA, M TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, IA and TYNDEL, M TZAMARIAS, S UDO, F UEBERSCHAER, S UVAROV, VA VALENTI, G VALLAZZA, E VALLS, JA VANAPELDOORN, GW and VANDAM, P VANDONINCK, WK VANEIJNDHOVEN, N VANDERVELDE, C and VARELA, J VAZ, P VEGNI, G VEITCH, ME VELASCO, J and VENTURA, L VENUS, W VERBEURE, F VERTOGRADOV, LS VIBERT, L VILANOVA, D VISHNEVSKIY, NK VLASOV, EV VODOPIANOV, AS and VOLLMER, M VOULGARIS, G VOUTILAINEN, M VRBA, V and WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEILHAMMER, P and WERNER, J WETHERELL, AM WICKENS, JH WIKNE, J WILLIAMS, WSC WINTER, M WORMALD, D WORMSER, G WOSCHNAGG, K and YAMDAGNI, N YEPES, P ZAITSEV, A ZALEWSKA, A ZALEWSKI, P and ZARUBIN, PI ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI and ZITOUN, R FUNCHAL, RZ ZUMERLE, G ZUNIGA, J
Published: 1990

39. SEARCH FOR SCALAR QUARKS IN Z0 DECAYS

Author: Abreu, P Adam, W Adami, F Adye, T Alexeev, GD and Allaby, JV Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Apel, WD Asman, B Ferreres, CA and Augustin, JE Augustinus, A Baillon, P Bambade, P and Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH and Beeston, CJ Beilliere, P Belokopytov, I Beltran, P and Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S and Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T and Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borisov, G and Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M and Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buttar, C Buytaert, JAMA Caccia, M and Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T and Canale, V Cao, F Carroll, L Caso, C Castelli, E and Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L and Charpentier, P Checchia, P Chelkov, GA Chevalier, L and Chliapnikov, P Chorowicz, V Cirio, R Clara, MP and Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB and Crennell, D Cresti, M Crosetti, G Crosland, N and Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N and De La Vaissiere, C De Lotto, B De Min, A Defoix, C and Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R and Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G and Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A and Ferroni, S Filippas, TA Firestone, A Foeth, H and Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Fruhwirth, R Fulda-Quenzer, F and Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D and Gasparini, U Gavillet, P Gawne, S Gazis, EN and Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Goobar, A Gopal, G Gorski, M Gotra, YN Gracco, V and Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, B Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M and Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD and Ioannou, P Iversen, PS Jackson, JN Jalocha, P and Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G and Kalmus, G Kantardjian, G Kapusta, F Kapusta, P and Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Klein, H Klempt, W Klovning, A and Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M and Koratzinos, M Korcyl, K Korzen, B Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C and Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J and Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E and Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R and Loerstad, B Lokajicek, M Loken, JG Aguera, MAL and Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R and Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Maillard, J and Maltezos, A Mandl, F Marco, J Marin, JC Markou, A and Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muller, H Myatt, G Naraghi, F Nau-Korzen, U and Navarria, FL Negr, P Nielsen, BS Nigro, M Nikolaenko, V and Obraztsov, V Odegaard, T Orava, R Ostankov, A and Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L and Pasini, P Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Pimenta, M Pingot, O Pinori, C Pinsent, A and Pol, ME Polok, G Poropat, P Pozdnyakov, VN and Privitera, P Pullia, A Pyyhtia, J Rademakers, AA and Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL and Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E and Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H and Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A and Sedykh, YV Segar, AM Sekulin, R Sessa, M Sette, G and Seufert, R Shellard, RC Siegrist, P Simonetti, S and Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S and Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stubenrauch, CJ and Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S and Tchernyaev, E Theodosiou, G Tilquin, A Timmermans, J and Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Treille, D and Trevisan, U Tristram, G Troncon, C Tsyganov, EN and Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA and Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW and Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Veitch, ME and Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevskiy, NK Vlasov, EV and Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M and Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M and Weilhammer, P Werner, J Wetherell, AM Wickens, JH and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R and Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Published: 1990

40. STUDY OF THE LEPTONIC DECAYS OF THE Z0 BOSON

Author: AARNIO, P ABREU, P ADAM, W ADAMI, F ADRIANOS, P and ADYE, T ALEKSEEV, GD ALLABY, JV ALLEN, P ALMEHED, S and ALVSVAAG, SJ AMALDI, U ANASSONTZIS, E ANTILOGUS, P APEL, WD ASMAN, B ASTESAN, F FERRERES, CA AUGUSTIN, JE and AUGUSTINUS, A BAILLON, P BARAO, F BARBIELLINI, G BARDIN, DY BARLAG, S BARLOW, J BARONCELLI, A BARRANCOLUQUE, M and BARREIRA, G BARRING, O BARTL, W BATES, MJ BATYUNIA, BV BAUBILLIER, M BECKS, KH BEESTON, CJ BELL, W and BELOKOPYTOV, I BELTRAN, P BENEDIC, D BENLLOCH, JM and BERGGREN, M BERTRAND, D BIAGI, S BIANCHI, F BIBBY, JH and BILLOIR, P BINGEFORS, N BJARNE, J BLOCH, D and BOGOLUBOV, PN BOLLINI, D BOLOGNESE, T BONAPART, M BOOTH, PSL BORATAV, M BORGEAUD, P BORNER, H BOSIO, C and BOTNER, O BOUQUET, B BOZZO, M BRAIBANT, S BRANCHINI, P and BRAND, C BRAND, KD BROWN, RCA BRUMMER, N BRUNET, JM and BUGGE, L BURAN, T BURMEISTER, H BUTTAR, C BUYTAERT, JAMA CABRAS, G CACCIA, M CAIRANTI, S CALVI, M ROZAS, AJC CAMPAGNE, JE CAMPION, A CAMPORESI, T CANALE, V and CAO, F CARROLL, L CASO, C CASTELLI, E GIMENEZ, VC and CATTAI, A CAVALLO, FR CERRITO, L CHADWICK, G and CHARPENTIER, P CHECCHIA, P CHELKOV, GA CHEVALIER, L and CHICCOLI, C CHLIAPNIKOV, PV CHOROWICZ, V CIRIO, R CLARA, MP CONTRERAS, JL CONTRI, R COUCHOT, F CRAWLEY, HB and CRENNELL, D CRESTI, M CROSETTI, G CROSLAND, N CROZON, M and MAESTRO, JC CURWEN, LS CZELLAR, S DAHLJENSEN, E and DALMAGNE, B DAM, M DAMGAARD, G DARBO, G DAUBIE, E and DAVENPORT, M DEANGELIS, A DEBEER, M DEBOECK, H DECLERCQ, C DEGROOT, N DELAVAISSIERE, C DELIKARIS, D DELPIERRE, P and DICIACCIO, L DIDDENS, AN DIJKSTRA, H DIMITRIOU, N and DJAMA, F DOLBEAU, J DOROBA, K DOWNS, R DRACOS, M and DREES, J DRIS, M DU, S DULINSKI, W DZHELYADIN, R and EDWARDS, DN EEK, LO EEROLA, PAM EKELOF, T EKSPONG, G and ELLILA, M ENGEL, JP FALALEEV, V FENYUK, A ALONSO, MF and FERRER, A FERRONI, S FILIPPAS, TA FIRESTONE, A FLINN, M and FOETH, H FOKITIS, E FOLEGATI, P FONTANELLI, F and FORSBACH, H FRAISSARD, D FRANEK, B FRANSSON, KE and FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R and FULDAQUENZER, F FUSTER, J GAGO, JM GAILLARD, M GALEAZZI, G GAMBA, D GASPAR, C GASPARINI, U GAVILLET, P GAWNE, S GAZIS, EN GENAT, JF GLITZA, KW GOKIELI, R and GOLOVATYUK, VM GOMES, P CADENAS, JJGY GOOBAR, A GOPAL, G and GORBICS, M GORET, B GORSKI, M GOUJON, G GRACCO, V and GRANT, A GRAZIANI, E GRILLET, JP GRITSAENKO, IA and GROS, MH GROS, M GROSDIDIER, G GROSSETETE, B GRUNG, B and GUGLIELMI, L GUMENYUK, S GUY, J HAHN, F HAHN, M and HAIDER, S HAISSINSKI, J HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K DEMONCHENAULT, GH HARRIS, F HECK, B and HERBST, I HERNANDEZ, JJ HERQUET, P HERR, H HIGON, E and HILKE, HJ HOFMANN, H HOFMOKL, T HOLMGREN, SO HOOPER, JE and HORISBERGER, R HOULDEN, M HRISOHO, A HRUBEC, J and HUITU, K HULTH, PO HULTQVIST, K HUSSON, D HYAMS, BD and IMBAULT, D IOANNOU, P IVERSEN, PS JACKSON, JN JAEGER, JJ and JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B and JOENSUU, J JOHANSSON, EK JOHANSSON, H JOHANSSON, S and JONKER, M JUILLOT, P KADYROV, RB KADYSHEVSKIY, VG and KALKANIS, G KALMUS, G KANTARDJIAN, G KATSANEVAS, S and KATSOUFIS, EC KERANEN, R KHOVANSKI, NN KING, B and KISIELEWSKI, B KLEIN, H KLEMPT, W KLOVNING, A KLUIT, P and KOENE, B KOKKINIAS, P KONTAXIS, I KOPF, M and KORATZINOS, M KORCYL, K KORYTOV, AV KORZEN, B and KOSTARAKIS, P KOURKOUMELIS, C KREUZBERGER, T KROLIKOWSKI, J and KRSTIC, J KRUENERMARQUIS, U KUCEWICZ, W KUHN, G and KURVINEN, K LAAKSO, MI LAMBROPOULOS, C LANCERI, L and LANGERVELD, D LAPIN, V LAUGIER, JP LAUHAKANGAS, R and LAURIKAINEN, P LAVIGNE, B LEGRAND, JC LEBBOLO, H LEDER, G LEMONNE, J LENZEN, G LEPELTIER, V LETESSIERSELVON, A and LIDBURY, JA LIEB, E LILLESTOL, E LILLETHUN, E LIPPI, I LLOSA, R LOERSTAD, B LOKAJICEK, M LOKEN, JG and AGUERA, MAL LORENZ, P LOUKAS, D LUCOCK, R LUNDJENSEN, B and LUTZ, P LYONS, L MAEHLUM, G MAELAND, O MAILLARD, J and MALTEZOS, A MALTEZOS, S MANDL, F MARCO, J MARIN, JC and MARKOU, A MAS, J MATHIS, L MATTEUZZI, C MATTHIAE, G and MATTSSON, L MAZZUCATO, M MCCUBBIN, M MCKAY, R and MENICHETTI, E MERONI, C MEYER, WT MICHALOWSKI, J and MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T and MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H and MULLER, H MUR, M MURYN, B MYATT, G NAVARRIA, FL and NEGRI, P NIELSEN, BS NIGRO, M NIKOLAENKO, V NONNI, M and NOPPE, JM NORDBERG, M NOUNOS, S OBRAZTSOV, V ODEGAARD, T and ORAVA, R OURAOU, A PAGOT, J PAIN, R PAKONSKI, K and PALKA, H LOPES, SP PAPADOPOULOU, T PAPE, L PASINI, P and PASSENEAU, M PASSERI, A PATTISON, JB PEGORARO, M and PEREVOZCHIKOV, V PEREZ, J PERNICKA, M PETRUCCI, G and PETTERSEN, T PIMENTA, M PINGOT, O PINORI, C PINSENT, A and POIRET, C POL, ME POLOK, G POROPAT, P POZDNYAKOV, VN and PRIVITERA, P PULLIA, A PYYHTIA, J QUERU, P QUINTON, S RADEMAKERS, AA RADOJICIC, D RAGAZZI, S RAGAZZON, R and RANGE, WH RAOUL, JC RATOFF, P READ, AL REDAELLI, NG and REGLER, M REID, D REIS, MV RENTON, P RESVANIS, LK and RICHARD, F RIDKY, J RINAUDO, G RODITI, I ROMAYA, AM and ROMERO, A RONCHESE, P RONGVED, R ROSENBERG, E ROSSEL, F and ROSSO, E ROUDEAU, P ROVELLI, T RUHLMANN, V RUIZ, A and RYBICKI, K SAARIKKO, H SACCO, D SACQUIN, Y SALGADO, CW SALT, J SANCHEZ, E SANCHIS, E SANNINO, M and SCHAEFFER, M SCHNEIDER, H SCURI, F SEBASTIA, A SEDYKH, YV SEGAR, AM SEKULIN, R SESSA, M SETTE, G SEUFERT, R and SHELLARD, RC SIEGRIST, P SIMONETTI, S SIMONETTO, F and SKAALI, TB SKEENS, J SKJEVLING, G SMADJA, G SMIRNOV, NE and SMITH, GR SOSNOWSKI, R SPANG, K SPENTZOURIS, P and SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C and STAVROPOULOS, G STICHELBAUT, F STOCCHI, A STRAUSS, J and STRUB, R SUNDELL, E SZCZEKOWSKI, M SZEPTYCKA, M and SZYMANSKI, P THEODOSIOU, G TILQUIN, A TIMMERMANS, J and TIMOFEEV, VG TKACHEV, LG TOET, DZ TOPPJORGENSEN, S and TOPPHOL, AK TORTORA, L TREILLE, D TREVISAN, U TRISTRAM, G TRONCON, C TRUONG, TK TSYGANOV, EN TURALA, M and TURCHETTA, R TURLUER, ML TUUVA, T TYAPKIN, I TYNDEL, M and UDO, F UEBERSCHAER, S ULLALAND, O UVAROV, VA and VALENTI, G VANAPELDOORN, GW VANDAM, P VANDONINCK, WK and VANEIJK, B VANEIJNDHOVEN, N VANDERVELDE, C VANUXEM, JP and VARELA, J VAZ, P VEGNI, G VEITCH, ME VELA, E and VELASCO, J VENTURA, L VENUS, W VILANOVA, D MELO, LV and VISHNEVSKIJ, NK VLASOV, EV VODOPIANOV, AS VOLLMER, M and VOULGARIS, G VOUTILAINEN, M WAHLEN, H WALCK, C WALDNER, F WAYNE, M WEILHAMMER, P WERNER, J WETHERELL, AM and WICKENS, JH WILLIAMS, WSC WINTER, M WORMSER, G and WOSCHNAGG, K YAMDAGNI, N YELTON, JM ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZEVGOLATAKOS, E ZHANG, G ZIMIN, NI and ZINCHENKO, AI ZITO, M ZITOUN, R FUNCHAL, RZ ZUMERLE, G
Published: 1990

41. MEASUREMENT OF THE PARTIAL WIDTH OF THE DECAY OF THE Z0 INTO CHARM QUARK PAIRS

Author: Abreu, P Adam, W Adami, F Adye, T Alekseev, GD and Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U and Anassontzis, E Apel, WD Asman, B Astier, P Augustin, JE and Augustinus, A Baillon, P Bambade, P Barao, F and Barbiellini, G Bardin, DY Baroncelli, A Barring, O and Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ and Beilliere, P Belokopytov, I Beltran, P Benedic, D and Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F and Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D and Bogolubov, PN Bollini, D Bolognese, T Bonapart, M and Bonesini, M Booth, PSL Boratay, M Borgeaud, P Borner, H and Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S and Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T and Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V and Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC and Cattai, A Cavallo, FRC Cerrito, L Charpentier, P and Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P and Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R and Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC and Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M and Damgaard, G Darbo, G Daubie, E Dauncey, PD and Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C and Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L and Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O and Doroba, K Dracos, M Drees, J Dris, M Dulinski, W and Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T and Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A and Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B and Fransson, KE Frenkiel, P Fries, DC Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J and Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U and Gavillet, P Gawne, S Gazis, EN Gerber, JP Giacomelli, P and Glitza, KW Gokieli, R Golovatyuk, VM Goobar, A and Gopal, G Gorski, M Gouz, Y Gracco, V Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G and Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M and Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K and De Monchenault, GH Harris, FJ Heck, B Herbst, I and Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ and Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE and Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN and Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB and Kalkanis, G Kalmus, G Kantarjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W and Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P and Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kourkoumelis, C Kreuzberger, T and Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W and Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW and Lanceri, L Lapin, V Laugier, JP Lauhakangas, R and Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G and Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E and Lillethum, E Lindgren, J Lippi, I Llosa, R and Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A and Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P and Lyons, L Maehlum, G Magnussen, N Maillard, J and Maltezos, S Mandl, F Marco, J Marin, JC Markou, A and Mathis, L Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E and Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV and Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR and Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F and Nnau-Lorzen, U Navarria, FL Negri, P Nielsen, BS and Nikolaenko, V Obraztsov, V Orava, R Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T Paper, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A and Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME and Poropat, P Privitera, P Pullia, A Pyyhtia, J and Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G and Roditi, I Romero, A Ronschese, P Rosenberg, EI Rossi, U and Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A and Saarikko, H Sacquin, Y Sanchez, E Sanxhez, J and Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F and Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G and Seufert, R Shellard, RC Siegrist, P Simonetti, S and Simonetto, F Sissakian, AN Skaali, TB Skeens, J and Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S and Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F and Stocchi, A Strauss, J Strub, R Stubenrauch, CJ and Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S and Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG and Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT and Treille, D Trevisan, U Trustram, G Troncon, C and Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E and Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK and Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P and Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F and Vertogradov, LS Vibert, L Vilanova, D Visnevskiy, NK and Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G and Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F and Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM and Wickens, JH Wikne, J Wilkinson, GR Williams, WC and Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N and Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimim, NI Zitoun, R and Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: A determination of the partial width gamma-cc-BAR of the Z0 boson into charm quark pairs is presented, based on a total sample of 36 900 Z0 hadronic decays measured with the DELPHI detector at the LEP collider. The production rate of ccBAR events is derived from the inclusive analysis of charged pions coming from the decay of charmed meson D*+ –> D0-pi+ and D*- –> DBAR0-pi- where the pi- +/- is constrained by kinematics to have a low p(T) with respect to the jet axis. The probability to procedure these pi- +/- from D* +/- decay in ccBAR events is taken to be 0.31 +/- 0.05 as measured at square-root s = 10.55 GeV. The measured relative partial width GAMMA-ccBAR/GAMMA-h = 0.162 +/- 0.030 (stat.) +/- 0.050(syst.) is in good agreement with the standard model value of 0.171. Together with our previous measurement of the total hadronic width GAMMA-h this implies GAMMA-ccBAR = 282 +/- 53(stat.) +/- 88(syst.) MeV.
Published: 1990

42. Disseminated coccidioidomycosis in pregnancy.

Author: Hooper JE, Lu Q, and Pepkowitz SH
Published: 2007
Full Text: View/download PDF

43. Relevance of the autopsy as a medical tool: a large database of physician attitudes.

Author: Hooper JE and Geller SA
Published: 2007
Full Text: View/download PDF

44. A STUDY OF CHARGED-PARTICLES ASSOCIATED WITH HIGH-PT PHOTONS AND PIONS

Author: AKESSON, T ALBROW, MG ALMEHED, S ANASSONTZIS, E BATLEY, R BENARY, O BOGGILD, H BOTNER, O BRODY, H BURKERT, V and DICIACCIO, A COCKERILL, D DAGAN, S DAHLJENSEN, E and DAHLJENSEN, I DAMGAARD, G EVANS, WM FABJAN, CW FERBEL, T and FRANDSEN, P FRANKEL, S FRATI, W GORDON, H HALLGREN, A HANSEN, KH HECK, B HILKE, HJ HOOPER, JE JARLSKOG, G JEFFREYS, P JENSEN, T KESSELER, G KILLIAN, T and KOURKOUMELIS, C VANDERLANS, J LISSAUER, D LORSTAD, B and LUDLAM, T MCCUBBIN, NA MANNELLI, I MARKOU, T MELIN, A and MJORNMARK, U MOLLER, R MOLZON, W NAPPI, A NIELSEN, BS NILSSON, A OLSEN, LH OREN, Y PALMER, RB RAHM, DC and REHAK, P RESVANIS, LK ROSSELET, L ROSSO, E RUDGE, A and SCHINDLER, RH SCHISTAD, B STUMER, I WILLIS, WJ and WINIK, M WITZELING, W WOODY, C
Published: 1982

45. ANTIBARYON PRODUCTION IN THE CENTRAL REGION AT THE ISR

Author: AKESSON, T ALBROW, MG ALMEHED, S ANASSONTZIS, E BATLEY, R BENARY, O BOGGILD, H BOTNER, O BREUKER, H BRODY, H and BURKERT, V CALLEN, B CAROSI, R CARTER, AA CARTER, JR and CECIL, PC CLELAND, WE COCKERILL, D DAGAN, S and DAHLJENSEN, E DAHLJENSEN, I DAM, P DAMGAARD, G EVANS, WM and FABJAN, CW FERBEL, T FRANDSEN, P FRANKEL, S FRATI, W and GIBSON, MD GOERLACH, U GORDON, H HALLGREN, A HANSEN, KH HECK, B HEDBERG, V HIDDLESTON, JW HILKE, HJ and HOOPER, JE JARLSKOG, G JEFFREYS, P JENSEN, T KESSELER, G and KILLIAN, T KOURKOUMELIS, C KROEGER, R KULKA, K and VANDERLANS, J LINDSAY, J LISSAUER, D LORSTAD, B LUDLAM, T MANNELLI, I MARKOU, A MCCUBBIN, NA MJORNMARK, U and MOLLER, R MOLZON, W NAPPI, A NIELSEN, BS NILSSON, A and OLSEN, LH OREN, Y PALMER, RB RAHM, DC REHAK, P and RESVANIS, LK ROSSELET, L ROSSO, E RUDGE, A SCHINDLER, RH and STUMER, I SULLIVAN, M THORSTENSON, G VELLA, E and WILLIAMSON, J WILLIS, WJ WINIK, M WITZELING, W WOODY, C and ZAJC, WA
Published: 1984

46. PRODUCTION OF PROMPT POSITRONS AT LOW TRANSVERSE-MOMENTUM IN 63 GEV PP COLLISIONS AT THE CERN INTERSECTING STORAGE-RINGS

Author: AKESSON, T ALBROW, MG ALMEHED, S ANASSONTZIS, E BATLEY, R BENARY, O BOGGILD, H BOTNER, O BREUKER, H BRODY, H and BURKERT, V CALLEN, B CAROSI, R CARTER, AA CARTER, JR and CECIL, PC CHERNYATIN, V CHOI, Y CLELAND, WE DAGAN, S and DAHLJENSEN, E DAHLJENSEN, I DAM, P DAMGAARD, G and DOLGOSHEIN, B EIDELMAN, S EVANS, WM FABJAN, CW FRANDSEN, P FRANKEL, S FRATI, W GAVRILENKO, I GIBSON, MD and GOERLACH, U GOLOUBKOV, Y GORDON, H HANSEN, KH HEDBERG, V and HIDDLESTON, JW HOOPER, JE IOANNOU, P JARLSKOG, G and JEFFREYS, P JENSEN, T KALINOVSKY, A KANTSEROV, V and KATSANEVAS, S KESSELER, G KILLIAN, T KOURKOUMELIS, C and KROEGER, R KULKA, K VANDERLANS, J LINDSAY, J LISSAUER, D and LORSTAD, B LUDLAM, T MANNELLI, I MARKOU, A MAYBUROV, S MCCUBBIN, NA MJORNMARK, U MOLLER, R MOLZON, W and NEVSKY, P NIELSEN, BS OLSEN, LH OREN, Y PALMER, RB and PISKOUNOV, G RAHM, DC RESVANIS, LK ROSSO, E RUDGE, A and SCHUKRAFT, J SHMELEVA, A SIDOROV, V SPECHT, H STUMER, I and SULLIVAN, M THOMPSON, JA THORSTENSON, G VASILIEV, P and VELLA, E WILLIAMSON, J WILLIS, WJ WINIK, M WITZELING, W and WOODY, C ZAJC, WA
Published: 1985

47. A COMPARISON OF DIRECT PHOTON, PI-O, AND ETA-PRODUCTION IN PPBAR AND PP INTERACTIONS AT THE CERN ISR

Author: AKESSON, T ALBROW, MG ALMEHED, S ANASSONTZIS, E BATLEY, R BENARY, O BOGGILD, H BOTNER, O BREUKER, H BRODY, H and BURKERT, V CALLEN, B CAROSI, R CARTER, AA CARTER, JR and CECIL, PC CHERNYATIN, V CHOI, Y CLELAND, WE DAGAN, S and DAHLJENSEN, E DAHLJENSEN, I DAM, P DAMGAARD, G and DOLGOSHEIN, B EIDELMAN, S EVANS, MW FABJAN, CW FRANDSEN, P FRANKEL, S FRATI, W GAVRILENKO, I GIBSON, MD and GOERLACH, U GOLOUBKOV, Y GORDON, H HANSEN, KH HEDBERG, V and HIDDLESTON, JW HOOPER, JE IOANNOU, P JARLSKOG, G and JEFFREYS, P JENSEN, T KALINOVSKY, A KANTSEROV, V and KATSANEVAS, S KESSELER, G KILLIAN, T KOURKOUMELIS, C and KROEGER, R KULKA, K VANDERLANS, J LINDSAY, J LISSAUER, D and LORSTAD, B LUDLAM, T MANNELLI, I MARKOU, A MAYBUROV, S MCCUBBIN, NA MJORNMARK, U MOLLER, R MOLZON, W and NEVSKY, P NIELSEN, BS OLSEN, LH OREN, Y PALMER, RB and PISKOUNOV, G RAHM, DC RESVANIS, LK ROSSO, E RUDGE, A and SCHUKRAFT, J SHMELEVA, A SIDOROV, V SPECHT, H STUMER, I and SULLIVAN, M THOMPSON, JA THORSTENSON, G VASILIEV, P and VELLA, E WILLIAMSON, J WILLIS, WJ WINIK, M WITZELING, W and WOODY, C ZAJC, WA
Published: 1985

48. A MEASUREMENT OF B-MESON PRODUCTION AND LIFETIME USING DL- EVENTS IN Z(0) DECAYS

Author: Abreu, P., Adam, W., Adye, T., Agasi, E., Alekseev, Gd, Algeri, A., Allen, P., Almehed, S., Alvsvaag, Sj, Amaldi, U., Anassontzis, Eg, Andreazza, A., Antilogus, P., Apel, Wd, Apsimon, Rj, Asman, B., Augustin, Je, Augustinus, A., Baillon, P., Bambade, P., Barao, F., Barate, R., Barbiellini, G., Bardin, Dy, Barker, Gj, Baroncelli, A., Barring, O., Barrio, Ja, Bartl, W., Bates, Mj, Battaglia, M., Baubillier, M., Becks, Kh, Beeston, Cj, Begalli, M., Beilliere, P., Belokopytov, Y., Beltran, P., Benedic, D., Benvenuti, Ac, Berggren, M., Bertrand, D., Bianchi, F., Bilenky, Ms, Billoir, P., Bjarne, J., Bloch, D., Blyth, S., Bocci, V., Bogolubov, Pn, Bolognese, T., Bonesini, M., Bonivento, W., Booth, Psl, Borgeaud, P., Borisov, G., Borner, H., Bosio, C., Bostjancic, B., Bosworth, S., Botner, O., Bouquet, B., Bourdarios, C., Bowcock, Tjv, Bozzo, M., Braibant, S., Branchini, P., Brand, Kd, Brenner, Ra, Briand, H., Bricman, C., Brown, Rca, Brummer, N., Brunet, Jm, Bugge, L., Buran, T., Burmeister, H., Buytaert, Jama, Caccia, M., Calvi, M., Rozas, Ajc, Campion, R., Camporesi, T., Canale, V., Cao, F., Carena, F., Carroll, L., Caso, C., Gimenez, Mvc, Cattai, A., Cavallo, Fr, Cerrito, L., Chabaud, V., Chan, A., Charpentier, P., Chaussard, L., Chauveau, J., Checchia, P., Chelkov, Ga, Chavalier, L., Chliapnikov, P., Chorowicz, V., Chrin, Jtm, Clara, Mp, Collins, P., Contreras, Jl, Contri, R., Cortina, E., Cosme, G., Couchot, F., Crawley, Hb, Crennell, D., Crosetti, G., Crozon, M., Maestro, Jc, Czellar, S., Dahljensen, E., Dalmagne, B., Dam, M., Damgaard, G., Darbo, G., Daubie, E., Daum, A., Dauncey, Pd, Davenport, M., David, P., Davies, J., Dasilva, W., Defoix, C., Delikaris, D., Delorme, S., Delpierre, P., Demaria, N., Deangelis, A., Debeer, M., Deboeck, H., Deboer, W., Declercq, C., Laso, Mdmd, Degroot, N., Delavaissiere, C., Delotto, B., Demin, A., Dijkstra, H., Diciaccio, L., Djama, F., Dolbeau, J., Donszelmann, M., Doroba, K., Dracos, M., Drees, J., Dris, M., Dufour, Y., Eek, Lo, Eerola, Pam, Ehret, R., Ekelof, T., Ekspong, G., Peisert, Ae, Engel, Jp, Ershaidat, N., Fassouliotis, D., Feindt, M., Alonso, Mf, Ferrer, A., Filippas, Ta, Firestone, A., Foeth, H., Fokitis, E., Fontanelli, F., Forbes, Kaj, Fousset, Jl, Francon, S., Franek, B., Frenkiel, P., Fries, Dc, Frodesen, Ag, Fruhwirth, R., Fuldaquenzer, F., Furnival, K., Furstenau, H., Fuster, J., Galeazzi, G., Gamba, D., Garcia, C., Garcia, J., Gaspar, C., Gasparini, U., Gavillet, P., Gazis, En, Gerber, Jp, Giacomelli, P., Gokieli, R., Golob, B., Golovatyuk, Vm, Cadenas, Jjgy, Goobar, A., Gopal, G., Gorski, M., Gracco, V., Grant, A., Grard, F., Graziani, E., Grosdidier, G., Gross, E., Grossewiesmann, P., Grossetete, B., Gumenyuk, S., Guy, J., Haedinger, U., Hahn, F., Hahn, M., Haider, S., Hakansson, A., Hallgren, A., Hamacher, K., Demonchenault, Gh, Hao, W., Harris, Fj, Henkes, T., Hernandez, Jj, Herquet, P., Herr, H., Hessing, Tl, Hietanen, I., Higgins, Co, Higon, E., Hilke, Hj, Hodgson, Sd, Hofmokl, T., Holmes, R., Holmgren, So, Holthuizen, D., Honore, Pf, Hooper, Je, Houlden, M., Hrubec, J., Huet, K., Hulth, Po, Hultqvist, K., Ioannou, P., Isenhower, D., Iversen, Ps, Jackson, Jn, Jalocha, P., Jarlskog, G., Jarry, P., Jeanmarie, B., Johansson, Ek, Johnson, D., Jonker, M., Jonsson, L., Juillot, P., Kalkanis, G., Kalmus, G., Kapusta, F., Karlsson, M., Karvelas, E., Katsanevas, S., Katsoufis, Ec, Keranen, R., Kesteman, J., Khomenko, Ba, Khovanski, Nn, King, B., Kjaer, Nj, Klein, H., Klempt, W., Klovning, A., Kluit, P., Kochmehrin, A., Koehne, Jh, Koene, B., Kokkinias, P., Kopf, M., Korcyl, K., Korytov, Av, Kostioukhine, V., Kourkoumelis, C., Kouznetsov, O., Kramer, Ph, Krolikowski, J., Kronkvist, I., Kruenermarquis, U., Krupinski, W., Kulka, K., Kurvinen, K., Lacasta, C., Lambropoulos, C., Lamsa, Jw, Lanceri, L., Lapin, V., Laugier, Jp, Lauhakangas, R., Leder, G., Ledroit, F., Leitner, R., Lemoigne, Y., Lemonne, J., Lenzen, G., Lepeltier, V., Lesiak, T., Levy, Jm, Lieb, E., Liko, D., Lindgren, J., Lindner, R., Lipniacka, A., Lippi, I., Loerstad, B., Lokajicek, M., Loken, Jg, Lopezfernandez, A., Aguera, Mal, Los, M., Loukas, D., Lozano, Jj, Lutz, P., Lyons, L., Maehlum, G., Maillard, J., Maltezos, A., Mandl, F., Marco, J., Margoni, M., Marin, Jc, Markou, A., Maron, T., Marti, S., Mathis, L., Matorras, F., Matteuzzi, C., Matthiae, G., Mazzucato, M., Mccubbin, M., Mckay, R., Mcnulty, R., Meola, G., Meroni, C., Meyer, Wt, Michelotto, M., Mikulec, I., Mirabito, L., Mitaroff, Wa, Mitselmakher, Gv, Mjoernmark, U., Moa, T., Moeller, R., Moenig, K., MONGE, MR, Morettini, P., Mueller, H., Murray, Wj, Muryn, B., Myatt, G., Navarria, Fl, Negri, P., Nielsen, Bs, Nijjhar, B., Nikolaenko, V., Nilsen, Pes, Niss, P., Obraztsov, V., Olshevski, Ag, Orava, R., Ostankov, A., Osterberg, K., Ouraou, A., Paganoni, M., Pain, R., Palka, H., Papadopoulou, Td, Pape, L., Passeri, A., Pegoraro, M., Pennanen, J., Perevozchikov, V., Pernicka, M., Perrotta, A., Petridou, C., Petrolini, A., Petrovykh, L., Pettersen, Te, Pierre, F., Pimenta, M., Pingot, O., Plaszczynski, S., Pol, Me, Polok, G., Poropat, P., Privitera, P., Pullia, A., Radojicic, D., Ragazzi, S., Rahmani, H., Ratoff, Pn, Read, Al, Redaelli, Ng, Regler, M., Reid, D., Renton, Pb, Resvanis, Lk, Richard, F., Richardson, M., Ridky, J., Rinaudo, G., Roditi, I., Romero, A., Roncagliolo, I., Ronchese, P., Ronnqvist, C., Rosenberg, Ei, Rossi, S., Rossi, U., Rosso, E., Roudeau, P., Rovelli, T., Ruckstuhl, W., Ruhlmannkleider, V., Ruiz, A., Rybicki, K., Saarikko, H., Sacquin, Y., Sajot, G., Salt, J., Sanchez, J., Sannino, M., Schael, S., Schneider, H., Schulze, B., Schyns, Mae, Sciolla, G., Scuri, F., Segar, Am, Sekulin, R., Sessa, M., Sette, G., Seufert, R., Shellard, Rc, Siccama, I., Siegrist, P., Simonetti, S., Simonetto, F., Sisakian, An, Skaali, Tb, Skjevling, G., Smadja, G., Smith, Gr, Sosnowski, R., Spassoff, Ts, Spiriti, E., Squarcia, S., Staeck, H., Stanescu, C., Stapnes, S., Stavropoulos, G., Stichelbaut, F., Stocchi, A., Strauss, J., Straver, J., Strub, R., Szczekowski, M., Szeptycka, M., Szymanski, P., Tabarelli, T., Tavernier, S., Tchikilev, O., Theodosiou, Ge, Tilquin, A., Timmermans, J., Timofeev, Vg, Tkatchev, Lg, Todorov, T., Toet, Dz, Toker, O., Ezio Torassa, Torassa, E., Tortora, L., Treille, D., Trevisan, U., Trischuk, W., Tristram, G., Troncon, C., Tsirou, A., Tsyganov, En, Turala, M., Turluer, Ml, Tuuva, T., Tyapkin, Ia, Tyndel, M., Tzamarias, S., Ueberschaer, S., Ullaland, O., Uvarov, V., Valenti, G., Vallazza, E., Ferrer, Jav, Vandervelde, C., Vanapeldoorn, Gw, Vandam, P., Vanderheijden, M., Vandoninck, Wk, Vaz, P., Vegni, G., Ventura, L., Venus, W., Verbeure, F., Vertogradov, Ls, Vilanova, D., Vincent, P., Vitale, L., Vlasov, E., Vodopyanov, As, Vollmer, M., Voulgaris, G., Voutilainen, M., Vrba, V., Wahlen, H., Walck, C., Waldner, F., Wayne, M., Wehr, A., Weierstall, M., Weilhammer, P., Werner, J., Wetherell, Am, Wickens, Jh, Wikne, J., Wilkinson, Gr, Williams, Wsc, Winter, M., Witek, M., Wormald, D., Wormser, G., Woschnagg, K., Yamdagni, N., Yepes, P., Zaitsev, A., Zalewska, A., Zalewski, P., Zavrtanik, D., Zevgolatakos, E., Zhang, G., Zimin, Ni, Zito, M., Zuberi, R., Funchal, Rz, Zumerle, G., Zuniga, J., 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), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), 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), 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), 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), 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 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), 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), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: Quark, CHARMED MESONS, Particle physics, HEAVY FLAVOR PRODUCTION, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Energy Fraction, Meson, LUND MONTE-CARLO, Electron–positron annihilation, 01 natural sciences, JET FRAGMENTATION, Nuclear physics, PHYSICS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], B meson, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Mean value, Hadronization, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract: A study of B meson decays into DlX final states is presented. In these events, neutral and charged D mesons originate predominantly from B+ and B0 decays, respectively. The dilution of this correlation due to D** production has been taken into account. From 263 700 hadronic Z0 decays collected in 1991 with the DELPHI detector at the LEP collider, 92 D0→K-π+, 35 D+→K-π+π+ and 61 D*0→D0π+ followed by D0→K-π+ or D0→K-π+π+π -, are found with an associated lepton of the same charge as the kaon. From the D0l- and D*+l-, the probability fd that a b quark hadronizes into a B- (or {Mathematical expression}) meson is found to be 0.44 ±0.08±0.09, corresponding to a total (Bs+Λb) hadronization fraction of 0.12-0.12+0.24. By reconstructing the energy of each B meson, the b quark fragmentation is directly measured for the first time. The mean value of the B meson energy fraction is: {Mathematical expression} Reconstructing D-lepton vertices, the following B lifetimes are measured: {Mathematical expression} and an average τ(B)=1.23-0.13+0.14(stat.)±0.15(syst.) ps is found. Allowing for decays into {Mathematical expression}, the B+ and B0 lifetimes are: {Mathematical expression} © 1993 Springer-Verlag.
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49. CHARGED-PARTICLE MULTIPLICITY DISTRIBUTIONS IN RESTRICTED RAPIDITY INTERVALS IN Z0 HADRONIC DECAYS

Author: Abreu, P Adam, W Adami, F Adye, T Akesson, T and Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ and Amaldi, U Anassontzis, E Antilogus, P Apel, WD and Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A and Barring, O Bartl, W Battaglia, M Bates, MJ Baubillier, M and Becks, KH Beeston, CJ Begalli, M Beiliere, P and Belokopytov, Y Beltran, P Benedic, D Benlloch, JM and Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH and Bilenky, MS Billoir, P Bjarne, J Bloch, D Blyth, S and Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M and Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C and Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P and Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H and Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A and Cavallo, FR Cerrito, L Chapkin, M Charpentier, P and Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P and Chorowicz, V Cirio, R Clara, MP Collins, P Contreras, JL and Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC and Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M and Damgaard, G Darbo, G Daubie, E Dauncey, PD and Davenport, M David, P Angelis, AD DeBeer, M DeBoeck, H and DeBoer, W DeClercq, C Laso, MDMD DeGroot, N De La Vaissiere, C DeLotto, B Defoix, C Delikaris, D Delorme, S Delpierre, P Demaria, N Demin, A Derkaoui, J and DiCiaccio, L Dijkstra, H Djama, F Dolbeau, J and Donszelmann, M Doroba, K Dracos, M Drees, J Dris, M and Dulinski, W Dzehlyadin, R Eek, LO Eerola, PAM Ekelof, T and Ekspong, G Peisert, AE Engel, JP Fassouliotis, D and Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H and Fokitis, E Folegati, P Fontanelli, F Forsbach, H and Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, C and Garcia, J Gasparini, U Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM and Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V and Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G and Grossetete, B Guy, J Hahn, F Hahn, M Haider, S and Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW Herbst, I Hernandez, JJ Herquet, P Herr, H Hietanen, I Higon, E Hilke, HJ and Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO and Holthuizen, D Honore, PF Hooper, JE Houlden, M Hrubec, J and Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Isenhower, D Iversen, PS Jackson, JN Jalocha, P and Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK and Johnson, D Jonker, M Jonsson, L Jullot, P Kalkanis, G and Kalmus, G Kantardjian, G Kapusta, F Kapusta, P and Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J and Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H and Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B and Kokkinias, P Kopf, M Koratzinos, M Korcyl, K and Korytov, AV Korzen, B Kostukhin, V Kourkoumelis, C and Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Lambropoulos, C Lamsa, JW and Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Leder, G and Ledroit, F Lemonne, J Lenzen, G Lepeltier, V and Letessier-Selvon, A Liko, D Lieb, E Lillethun, E and Lindgren, J Lipniacka, A Lippi, I Llosa, R Loerstad, B and Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A and Los, M Loukas, D Lounis, A Lonzano, JJ Lucock, R and Lutz, P Lyons, L Maehlum, G Maillard, J Maltezos, A and Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC and Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, M McCubbin, M McKay, R McNulty, R and Menichetti, E Meola, G Meroni, C Meyer, WT Michelotto, M and Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T and Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H and Muller, H Murray, WJ Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nijjhar, B and Nikolaenko, V Obraztsov, V Olshevski, AG Orava, R and Ostankow, A Ouraou, A Pain, R Palka, H Papadopoulou, T and Pape, L Passeri, A Pegoraro, M Perevozchikov, V and Pernicka, M Perrotta, A Pierre, F Pimenta, M Pingot, O and Pinsent, A Pol, ME Polok, G Poropat, P Privitera, P and Pullia, A Pyyhtia, J Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M and Ridky, J Rinaudo, G Roditi, I Romero, A Roncagliolo, I and Ronchese, P Ronnqvist, C Rosenberg, EI Rossi, U and Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W Ruhlmann, V and Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Salt, J and Sanchez, E Sanchez, J Sannino, M Schaeffer, M and Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M and Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G and Smadja, G Smith, GR Smirnov, N Sosnowski, R Spassoff, TS and Spiriti, E Squarcia, S Staeck, H Stanescu, C and Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J and Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M and Szymanski, P Tabarelli, T Tavernier, S Theodosiou, G and Tilquin, A Timmermans, J Timoveev, VG Tkatchev, LG and Todorov, T Toet, DZ Tomaradze Tortora, L Trainor, MT and Treille, D Trevisan, U Trischuk, W Tristam, G Troncon, C and Tsirou, A Tsyganov, EN Turala, M Turchetta, R and Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S and Ueberschaer, S Ullaland, O Uvarov, VA Valenti, G and Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK and Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P and Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F and Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N and Viasov, EV Vodopyanov, AS Vollmer, M Volponi, S and Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C and Waldner, F Wayne, M Weilhammer, P Werner, J and Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR and Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A and Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zito, M and Zitoun, R Funchal, RZ Zumerle, G Zuniga, J DELPHI Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: The multiplicity distributions of charged particles in restricted rapidity intervals in Z0 hadronic decays measured by the DELPHI detector are presented. The data reveal a shoulder structure, best visible for intervals of intermediate size, i.e. for rapidity limits around +/- 1.5. The whole set of distributions including the shoulder structure is reproduced by the Lund Parton Shower model. The structure is found to be due to important contributions from 3- and 4-jet events with a hard gluon jet. A different model, based on the concept of independently produced groups of particles, “clans”, fluctuating both in number per event and particle content per clan, has also been used to analyse the present data. The results show that for each interval of rapidity the average number of clans per event is approximately the same as at lower energies.

50. Determination of Z$^0$ resonance parameters and couplings from its hadronic and leptonic decays

Author: Abreu, P, Adam, W, Adami, F, Adye, T, Akesson, T, Alekseev, Gd, Allen, P, Almehed, S, Alted, F, Alvsvaag, Sj, Amaldi, U, Anassontzis, E, Antilogus, P, Apel, Wd, Apsimon, Rj, Asman, B, Astier, P, Augustin, Je, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Bardin, Dy, Baroncelli, A, Barring, O, Bartl, W, Battaglia, M, Bates, Mj, Baubillier, M, Becks, Kh, Beeston, Cj, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Benlloch, Jm, Berggren, M, Bertrand, D, Biagi, S, Bianchi, F, Bibby, Jh, Bilenky, Ms, Billoir, P, Bjarne, J, Bloch, D, Blyth, S, Bogolubov, Pn, Bolognese, T, Bonapart, M, Bonesini, M, Bonivento, W, Booth, Psl, Boratav, M, Borgeaud, P, Borisov, G, Borner, H, Bosio, C, Botner, O, Bouquet, B, Bozzo, M, Braibant, S, Branchini, P, Brand, Kd, Brenner, Ra, Bricman, C, Brown, Rca, Brummer, N, Brunet, Jm, Bugge, L, Buran, T, Burmeister, H, Buytaert, Jama, Caccia, M, Calvi, M, Rozas, Ajc, Campagne, Je, Campion, A, Camporesi, T, Canale, V, Cao, F, Carroll, L, Caso, C, Castelli, E, Gimenez, Mvc, Cattai, A, Cavallo, Fr, Cerrito, L, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, Ga, Chevalier, L, Chliapnikov, P, Chorowicz, V, Cirio, R, Clara, Mp, Collins, P, Contreras, Jl, Contri, R, Cosme, G, Couchot, F, Crawley, Hb, Crennell, D, Crosetti, G, Crosland, N, Crozon, M, Maestro, Jc, Czellar, S, Dagoret, S, Dahljensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Dauncey, Pd, Davenport, M, David, P, Deangelis, A, Debeer, M, Deboeck, H, Deboer, W, Declercq, C, Laso, Mdmd, Degroot, N, Delavaissiere, C, DE LOTTO, Barbara, Demin, A, Defoix, C, Delikaris, D, Delorme, S, Delpierre, P, Demaria, N, Derkaoui, J, Diciaccio, L, Dijkstra, H, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dufour, Y, Dulinski, W, Dzhelyadin, R, Eek, Lo, Eerola, Pam, Ekelof, T, Ekspong, G, Peisert, Ae, Engel, Jp, Fassouliotis, D, Alonso, Mf, Ferrer, A, Filippas, Ta, Firestone, A, Foeth, H, Fokitis, E, Folegati, P, Fontanelli, F, Forsbach, H, Franek, B, Frenkiel, P, Fries, Dc, Frodesen, Ag, Fruhwirth, R, Fuldaquenzer, F, Furnival, K, Furstenau, H, Fuster, J, Gago, Jm, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gasparini, U, Gavillet, P, Gazis, En, Gerber, Jp, Giacomelli, P, Glitza, Kw, Gokieli, R, Golovatyuk, Vm, Cadenas, Jjgy, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Gros, Mh, Grosdidier, G, Grossetete, B, Gumenyuk, S, Guy, J, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, Demonchenault, Gh, Harris, Fj, Heck, Bw, Herbst, I, Hernandez, Jj, Herquet, P, Herr, H, Hietanen, I, Higon, E, Hilke, Hj, Hodgson, Sd, Hofmokl, T, Holmes, R, Holmgren, So, Holthuizen, D, Honore, Pf, Hooper, Je, Houlden, M, Hrubec, J, Hulth, Po, Hultqvist, K, Husson, D, Hyams, Bd, Ioannou, P, Isenhower, D, Iversen, Ps, Jackson, Jn, Jalocha, P, Jarlskog, G, Jarry, P, Jeanmarie, B, Johansson, Ek, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, Kalmus, G, Kantardjian, G, Kapusta, F, Katsanevas, S, Katsoufis, Ec, Keranen, R, Kesteman, J, Khomenko, Ba, Khovanski, Nn, King, B, Kjaer, Nj, Klein, H, Klempt, W, Klovning, A, Kluit, P, Koehne, Jh, Koene, B, Kokkinias, P, Kopf, M, Koratzinos, M, Korcyl, K, Korytov, Av, Korzen, B, Kostukhin, V, Kourkoumelis, C, Kreuzberger, T, Krolikowski, J, Kruenermarquis, U, Krupinski, W, Kucewicz, W, Kulka, K, Kurvinen, K, Lacasta, C, Lambropoulos, C, Lamsa, Jw, Lanceri, L, Lapin, V, Laugier, Jp, Lauhakangas, R, Leder, G, Ledroit, F, Lemonne, J, Lenzen, G, Lepeltier, V, Letessierselvon, A, Liko, D, Lieb, E, Lillethun, E, Lindgren, J, Lipniacka, A, Lippi, I, Llosa, R, Loerstad, B, Lokajicek, M, Loken, Jg, Aguera, Mal, Lopezfernandez, A, Los, M, Loukas, D, Lounis, A, Lozano, Jj, Lucock, R, Lutz, P, Lyons, L, Maehlum, G, Maillard, J, Maltezos, A, Maltezos, S, Mandl, F, Marco, J, Margoni, M, Marin, Jc, Markou, A, Marti, S, Mathis, L, Matorras, F, Matteuzzi, C, Matthiae, G, Mazzucato, M, Mccubbin, M, Mckay, R, Mcnulty, R, Menichetti, E, Meola, G, Meroni, C, Meyer, Wt, Michelotto, M, Mitaroff, Wa, Mitselmakher, Gv, Mjoernmark, U, Moa, T, Moeller, R, Moenig, K, Monge, Mr, Morettini, P, Mueller, H, Muller, H, Murray, Wj, Muyatt, G, Naraghi, F, Naukorzen, U, Navarria, Fl, Negri, P, Nielsen, Bs, Nijjhar, B, Nikolaenko, V, Obraztsov, V, Olshevski, Ag, Orava, R, Ostankov, A, Ouraou, A, Pain, R, Palka, H, Papadopoulou, T, Pape, L, Passeri, A, Pegoraro, M, Perevozchikov, V, Pernicka, M, Perrotta, A, Pierre, F, Pimenta, M, Pingot, O, Pinsent, A, Pol, Me, Polok, G, Poropat, P, Privitera, P, Pullia, A, Pyyhtia, J, Radojicic, D, Ragazzi, S, Range, Wh, Ratoff, Pn, Read, Al, Redaelli, Ng, Regler, M, Reid, D, Renton, Pb, Resvanis, Lk, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, Ei, Rossi, U, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Salt, J, Sanchez, E, Sanchez, J, Sannino, M, Schaeffer, M, Schael, S, Schneider, H, Scuri, Fabrizio, Segar, Am, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, Rc, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, An, Skaali, Tb, Skjevling, G, Smadja, G, Smith, Gr, Smirnov, N, Sosnowski, R, Spassoff, Ts, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stubenrauch, Cj, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tavernier, S, Tchikilev, O, Theodosiou, Ge, Tilquin, A, Timmermans, J, Timofeev, Vg, Tkatchev, Lg, Todorov, T, Toet, Dz, Tortora, L, Trainor, Mt, Treille, D, Trevisan, U, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, En, Turala, M, Turchetta, R, Turluer, Ml, Tuuva, T, Tyapkin, Ia, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ueberschaer, S, Ullaland, O, Uvarov, Va, Valenti, G, Vallazza, E, Ferrer, Jav, Vanapeldoorn, Gw, Vandam, P, Vandoninck, Wk, Vaneijndhoven, N, Vandervelde, C, Varela, J, Vaz, P, Vegni, G, Velasco, J, Ventura, L, Venus, W, Verbeure, F, Vertogradov, Ls, Vibert, L, Vilanova, D, Vlasov, Ev, Vodopyanov, As, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Weilhammer, P, Werner, J, Wetherell, Am, Wickens, Jh, Wikne, J, Wilkinson, Gr, Williams, Wsc, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zevgolatakos, E, Zhang, G, Zimin, Ni, Zito, M, Zitoun, R, Funchal, Rz, Zumerle, G, Zuniga, J., 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), 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), 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, Abreu, P, Adam, W, Adami, F, Adye, T, Akesson, T, Alekseev, G, Allen, P, Almehed, S, Alted, F, Alvsvaag, S, Amaldi, U, Anassontzis, E, Antilogus, P, Apel, W, Apsimon, R, Åsman, B, Astier, P, Augustin, J, Augustinus, A, Baillon, P, Bambade, P, Barao, F, Barbiellini, G, Bardin, D, Baroncelli, A, Barring, O, Bartl, W, Battaglia, M, Bates, M, Baubillier, M, Becks, K, Beeston, C, Begalli, M, Beilliere, P, Belokopytov, Y, Beltran, P, Benedic, D, Benlloch, J, Berggren, M, Bertrand, D, Biagi, S, Bianchi, F, Bibby, J, Bilenky, M, Billoir, P, Bloch, D, Blyth, S, Bogolubov, P, Bolognese, T, Bonapart, M, Bonesini, M, Bonivento, W, Booth, P, Boratav, M, Borgeaud, P, Borisov, G, Borner, H, Bosio, C, Botner, O, Bouquet, B, Bozzo, M, Braibant, S, Branchini, P, Brand, K, Brenner, R, Bricman, C, Brown, R, Brummer, N, Brunet, J, Bugge, L, Buran, T, Burmeister, H, Buytaert, J, Caccia, M, Calvi, M, Camacho Rozas, A, Campagne, J, Campion, A, Camporesi, T, Canale, V, Cao, F, Cavallo, F, Cerrito, L, Chapkin, M, Charpentier, P, Checchia, P, Chelkov, G, Chevalier, L, Chliapnikov, P, Chorowicz, V, Cirio, R, Clara, M, Collins, P, Contreras, J, Contri, R, Cosme, G, Couchot, F, Crawley, H, Crennell, D, Crosetti, G, Crosland, N, Crozon, M, Cuevas Maestro, J, Czellar, S, Dagoret, S, Dahl-Jensen, E, Dalmagne, B, Dam, M, Damgaard, G, Darbo, G, Daubie, E, Dauncey, P, Davenport, M, David, P, De Angelis, A, De Beer, M, De Boeck, H, De Boer, W, De Clercq, C, De Fez Laso, M, De Groot, N, De La Vaissiere, C, De Lotto, B, De Min, A, Defoix, C, Delikaris, D, Delorme, S, Delpierre, P, Demaria, N, Derkaoui, J, Di Ciaccio, L, Dijkstra, H, Djama, F, Dolbeau, J, Donszelmann, M, Doroba, K, Dracos, M, Drees, J, Dris, M, Dufour, Y, Dulinski, W, Dzhelyadin, R, Eek, L, Eerola, P, Ekelof, T, Ekspong, G, Elliot Peisert, A, Engel, J, Fassouliotis, D, Fernandez Alonso, M, Ferrer, A, Filippas, T, Firestone, A, Foeth, H, Fokitis, E, Folegati, P, Fontanelli, F, Forsbach, H, Franek, B, Frenkiel, P, Fries, D, Frodesen, A, Fruhwirth, R, Fulda-Quenzer, F, Furnival, K, Furstenau, H, Fuster, J, Gago, J, Galeazzi, G, Gamba, D, Garcia, C, Garcia, J, Gasparini, U, Gavillet, P, Gazis, E, Gerber, J, Giacomelli, P, Glitza, K, Gokieli, R, Golovatyuk, V, Gomez Y Cadenas, J, Goobar, A, Gopal, G, Gorski, M, Gracco, V, Grant, A, Grard, F, Graziani, E, Gros, M, Grosdidier, G, Grossetete, B, Gumenyuk, S, Guy, J, Hahn, F, Hahn, M, Haider, S, Hajduk, Z, Hakansson, A, Hallgren, A, Hamacher, K, De Monchenault, G, Harris, F, Heck, B, Herbst, I, Hernandez, J, Herquet, P, Herr, H, Hietanen, I, Higon, E, Hilke, H, Hodgson, S, Hofmokl, T, Holmes, R, Holmgren, S, Holthuizen, D, Honore, P, Hooper, J, Houlden, M, Hrubec, J, Hulth, P, Hultqvist, K, Husson, D, Hyams, B, Ioannou, P, Isenhower, D, Iversen, P, Jackson, J, Jalocha, P, Jarlskog, G, Jarry, P, Jean-Marie, B, Johansson, E, Johnson, D, Jonker, M, Jonsson, L, Juillot, P, Kalkanis, G, Kalmus, G, Kantardjian, G, Kapusta, F, Katsanevas, S, Katsoufis, E, Keranen, R, Kesteman, J, Khomenko, B, Khovanski, N, King, B, Kjaer, N, Klein, H, Klempt, W, Klovning, A, Kluit, P, Koehne, J, Koene, B, Kokkinias, P, Kopf, M, Koratzinos, M, Korcyl, K, Korytov, A, Korzen, B, Kostukhin, V, Kourkoumelis, C, Kreuzberger, T, Krolikowski, J, Kruener-Marquis, U, Krupinski, W, Kucewicz, W, Kulka, K, Kurvinen, K, Lacasta, C, Lambropoulos, C, Lamsa, J, Lanceri, L, Lapin, V, Laugier, J, Lauhakangas, R, Leder, G, 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Pimenta, M, Pingot, O, Pinsent, A, Pol, M, Polok, G, Poropat, P, Privitera, P, Pullia, A, Pyyhtia, J, Radojicic, D, Ragazzi, S, Range, W, Ratoff, P, Read, A, Redaelli, N, Regler, M, Reid, D, Renton, P, Resvanis, L, Richard, F, Richardson, M, Ridky, J, Rinaudo, G, Roditi, I, Romero, A, Roncagliolo, I, Ronchese, P, Ronnqvist, C, Rosenberg, E, Rossi, U, Rosso, E, Roudeau, P, Rovelli, T, Ruckstuhl, W, Ruhlmann, V, Ruiz, A, Rybicki, K, Saarikko, H, Sacquin, Y, Salt, J, Sanchez, E, Sanchez, J, Sannino, M, Schaeffer, M, Schael, S, Schneider, H, Scuri, F, Segar, A, Sekulin, R, Sessa, M, Sette, G, Seufert, R, Shellard, R, Siegrist, P, Simonetti, S, Simonetto, F, Sissakian, A, Skaali, T, Skjevling, G, Smadja, G, Smith, G, Smirnov, N, Sosnowski, R, Spassoff, T, Spiriti, E, Squarcia, S, Staeck, H, Stanescu, C, Stavropoulos, G, Stichelbaut, F, Stocchi, A, Strauss, J, Strub, R, Stubenrauch, C, Szczekowski, M, Szeptycka, M, Szymanski, P, Tabarelli, T, Tavernier, S, Tchikilev, O, Theodosiou, G, Tilquin, A, Timmermans, J, Timofeev, V, Tkatchev, L, Todorov, T, Toet, D, Tortora, L, Trainor, M, Treille, D, Trevisan, U, Trischuk, W, Tristram, G, Troncon, C, Tsirou, A, Tsyganov, E, Turala, M, Turchetta, R, Turluer, M, Tuuva, T, Tyapkin, I, Tyndel, M, Tzamarias, S, Ueberschaer, B, Ueberschaer, S, Ullaland, O, Uvarov, V, Valenti, G, Vallazza, E, Valls Ferrer, J, Van Apeldoorn, G, Van Dam, P, Van Doninck, W, Van Eijndhoven, N, Vander Velde, C, Varela, J, Vaz, P, Vegni, G, Velasco, J, Ventura, L, Venus, W, Verbeure, F, Vertogradov, L, Vibert, L, Vilanova, D, Vlasov, E, Vodopyanov, A, Vollmer, M, Volponi, S, Voulgaris, G, Voutilainen, M, Vrba, V, Wahlen, H, Walck, C, Waldner, F, Wayne, M, Weilhammer, P, Werner, J, Wetherell, A, Wickens, J, Wikne, J, Wilkinson, G, Williams, W, Winter, M, Wormald, D, Wormser, G, Woschnagg, K, Yamdagni, N, Yepes, P, Zaitsev, A, Zalewska, A, Zalewski, P, Zevgolatakos, E, Zhang, G, Zimin, N, Zito, M, Zitoun, R, Zukanovich Funchal, R, Zumerle, G, Zuniga, J, 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), 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), Abreu, P., Adama, W., and Canale, Vincenzo
Subjects: Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, 7. Clean energy, 01 natural sciences, JET FRAGMENTATION, Nuclear physics, BHABHA SCATTERING, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], RADIATIVE-CORRECTIONS, ONE-LOOP CORRECTIONS, ANNIHILATION, 010306 general physics, HIGH-ENERGIES, Physics, E+E-PHYSICS, PHOTON CORRECTIONS, BOSON, 010308 nuclear & particles physics, Electroweak interaction, Single parameter, Weinberg angle, 3. Good health, Physique des particules élémentaires, Neutrino, Particle Physics - Experiment, Lepton
Abstract: From measurements of the cross sections for e+e- → hadrons and the cross sections and forward-backward charge-asymmetries for e+e- → e+e-, μ+μu- and τ+τ- at several centreof-mass energies around the Za pole with the DELPHI apparatus, using approximately 150000 hadronic and leptonic events from 1989 and 1990, one determines the following Z0 parameters: the mass and total width MZ = 91.177 ± 0.022 GeV. ΓZ = 2.465 ± 0.020 GeV, the hadronic and leptonic partial widths Γh = 1.726 + 0.019 GeV, Γl = 83.4 ± 0.8 MeV, the invisible width Γinv = 488 ± 17 MeV, the ratio of hadronic over leptonic partial widths RZ = 20.70 + 0.29 and the Born level hadronic peak cross section σ0 = 41.84 ± 0.45 nh. A flavour-independent measurement of the leptonic cross section gives very consistent results to those presented above (Γl = 83.7 ± 0.8 MeV). From these results the number of light neutrino species is determined to be Nv, = 2.94 ± 0.10. The individual leptonic widths obtained are: Γe = 82.4 ± 1.2 MeV, Γμ = 86.9 ± 2.1 MeV and Γτ = 82.7±2.4 MeV. Assuming universality, the squared vector and axial-vector couplings of the Z0 to charged leptons are: V̄l 2 = 0.0003 ± 0.0010 and Āl 2 = 0.2508 ± 0.0027. These values correspond to the electroweak parameters: ρeff = 1.003 ± 0.011 and sin2θW eff = 0.241 ± 0.009. Within the Minimal Standard Model (MSM), the results can be expressed in terms of a single parameter: sin2θW MS = 0.2338 ± 0.0027. All these values are in good agreement with the predictions of the MSM. Fits yield 43 < mtop < 215 GeV at the 95% level. Finally, the measured values of ΓZ and Γinv are used to derive lower mass bounds for possible new particles., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

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