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Measurement of the ZZ cross-section in e(+)e(-) interactions at 183-189 GeV

Authors :
Abreu, P Adam, W Adye, T Adzic, P Ajinenko, I and Albrecht, Z Alderweireld, T Alekseev, GD Alemany, R and Allmendinger, T Allport, PP Almehed, S Amaldi, U and Amapane, N Amato, S Anassontzis, EG Andersson, P and Andreazza, A Andringa, S Antilogus, P Apel, WD Arnoud, Y and Asman, B Augustin, JE Augustinus, A Baillon, P and Ballestrero, A Bambade, P Barao, F Barbiellini, G and Barbier, R Bardin, DY Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Beilliere, P Belokopytov, Y Benekos, NC Benvenuti, AC and Berat, C Berggren, M Berntzon, L Bertrand, D Besancon, M and Bilenky, MS Bizouard, MA Bloch, D Blom, HM Bonesini, M Boonekamp, M Booth, PSL Borisov, G Bosio, C and Botner, O Boudinov, E Bouquet, B Bourdarios, C Bowcock, TJV Boyko, I Bozovic, I Bozzo, M Bracko, M and Branchini, P Brenner, RA Bruckman, P Brunet, JM Bugge, L and Buran, T Buschmann, P Cabrera, S Caccia, M Calvi, M and Camporesi, T Canale, V Carena, F Carroll, L Caso, C and Gimenez, MVC Cattai, A Cavallo, FR Charpentier, P and Checchia, P Chelkov, GA Chierici, R Chliapnikov, P and Chochula, P Chorowicz, V Chudoba, J Cieslik, K Collins, P Contri, R Cortina, E Cosme, G Cossutti, F Costa, M and Crawley, HB Crennell, D Croix, J Maestro, JC and Czellar, S D'Hondt, J Dalmau, J Davenport, M Da Silva, W and Della Ricca, G Delpierre, P Demaria, N De Angelis, A and De Boer, W De Clercq, C De Lotto, B De Min, A De Paula, L Dijkstra, H Di Ciaccio, L Dolbeau, J Doroba, K and Dracos, M Drees, J Dris, M Eigen, G Ekelof, T and Ellert, M Elsing, M Engel, JP Santo, ME Fanourakis, G and Fassouliotis, D Feindt, M Fernandez, J Ferrer, A and Ferrer-Ribas, E Ferro, F Firestone, A Flagmeyer, U and Foeth, H Fokitis, E Fontanelli, F Franek, B Frodesen, AG and Fruhwirth, R Fulda-Quenzer, F Fuster, J Galloni, A and Gamba, D Gamblin, S Gandelman, M Garcia, C Gaspar, C and Gaspar, M Gasparini, U Gavillet, P Gazis, EN Gele, D and Geralis, T Gerdyukov, L Ghodbane, N Gil, I Glege, F and Gokieli, R Golob, B Gomez-Ceballos, G Goncalves, P and Caballero, IG Gopal, G Gorn, L Gouz, Y Gracco, V and Grahl, J Graziani, E Gris, P Grosdidier, G Grzelak, K and Guy, J Haag, C Hahn, F Hahn, S Haider, S and Hallgren, A Hamacher, K Hansen, J Harris, FJ Haug, S and Hauler, F Hedberg, V Heising, S Hernandez, JJ Herquet, P and Herr, H Higon, E Holmgren, SO Holt, PJ Hoorelbeke, S and Houlden, M Hrubec, J Huber, M Hughes, GJ Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R and Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B Jeans, D and Johansson, EK Jonsson, P Joram, C Juillot, P and Jungermann, L Kapusta, F Karafasoulis, K Katsanevas, S and Katsoufis, EC Keranen, R Kernel, G Kersevan, BP and Khokhlov, Y Khomenko, BA Khovanski, NN Kiiskinen, A and King, B Kinvig, A Kjaer, NJ Klapp, O Kluit, P and Kokkinias, P Kostioukhine, V Kourkoumelis, C Kouznetsov, O and Krammer, M Kriznic, E Krumstein, Z Kubinec, P and Kurowska, J Kurvinen, K Lamsa, JW Lane, DW Laugier, JP and Lauhakangas, R Leder, G Ledroit, F Leinonen, L and Leisos, A Leitner, R Lemonne, J Lenzen, G Lepeltier, V and Lesiak, T Lethuillier, M Libby, J Liebig, W Liko, D and Lipniacka, A Lippi, I Loerstad, B Loken, JG Lopes, JH Lopez, JM Lopez-Fernandez, R Loukas, D Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Maltezos, S Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A and Martinez-Rivero, C Garcia, SMI Masik, J and Mastroyiannopoulos, N Matorras, F Matteuzzi, C Matthiae, G and Mazzucato, F Mazzucato, M McCubbin, M McKay, R and McNulty, R McPherson, G Merle, E Meroni, C Meyer, WT and Migliore, E Mirabito, L Mitaroff, WA Mjoernmark, U Moa, T Moch, M Moeller, R Moenig, K Monge, MR Montenegro, J Moraes, D Morettini, P Morton, G Mueller, U and Muenich, K Mulders, M Mulet-Marquis, C Mundim, LM and Muresan, R Murray, WJ Muryn, B Myatt, G Myklebust, T and Naraghi, F Nassiakou, M Navarria, FL Nawrocki, K Negri, P Neufeld, N Nicolaidou, R Nielsen, BS Niezurawski, P and Nikolenko, M Nomokonov, V Nygren, A Obraztsov, V and Olshevski, AG Onofre, A Orava, R Osterberg, K Ouraou, A and Oyanguren, A Paganoni, M Paiano, S Pain, R Paiva, R and Palacios, J Palka, H Papadopoulou, TD Pape, L and Parkes, C Parodi, F Parzefall, U Passeri, A Passon, O and Pavel, T Pegoraro, M Peralta, L Pernicka, M and Perrotta, A Petridou, C Petrolini, A Phillips, HT and Pierre, F Pimenta, M Piotto, E Podobnik, T Poireau, V and Pol, ME Polok, G Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N Pullia, A Radojicic, D Ragazzi, S and Rahmani, H Rames, J Ratoff, PN Read, AL Rebecchi, P and Redaelli, NG Regler, M Rehn, J Reid, D Reinertsen, P and Reinhardt, R Renton, PB Resvanis, LK Richard, F Ridky, J and Rinaudo, G Ripp-Baudot, I Romero, A Ronchese, P and Rosenberg, EI Rosinsky, P Roudeau, P Rovelli, T and Ruhlmann-Kleider, V Ruiz, A Saarikko, H Sacquin, Y and Sadovsky, A Sajot, G Salt, J Sampsonidis, D Sannino, M and Savoy-Navarro, A Schwanda, C Schwemling, P Schwering, B and Schwickerath, U Scuri, F Seager, P Sedykh, Y Segar, AM Seibert, N Sekulin, R Sette, G Shellard, RC and Siebel, M Simard, L Simonetto, F Sisakian, AN Smadja, G and Smirnov, N Smirnova, O Smith, GR Sokolov, A and Solovianov, O Sopczak, A Sosnowski, R Spassov, T and Spiriti, E Squarcia, S Stanescu, C Stanitzki, M and Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B and Szczekowski, M Szeptycka, M Tabarelli, T Taffard, A and Tegenfeldt, F Terranova, F Timmermans, J Tinti, N and Tkatchev, LG Tobin, M Todorova, S Tome, B Tonazzo, A and Tortora, L Tortosa, P Transtromer, G Treille, D and Tristram, G Trochimczuk, M Troncon, C Turluer, ML and Tyapkin, IA Tyapkin, P Tzamarias, S Ullaland, O Uvarov, V Valenti, G Vallazza, E Van Dam, P Van den Boeck, W and Van Doninck, WK Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Ventura, L Venus, W and Verbeure, F Verdier, P Verlato, M Vertogradov, LS Verzi, V Vilanova, D Vitale, L Vlasov, E Vodopyanov, AS and Voulgaris, G Vrba, V Wahlen, H Washbrook, AJ Weiser, C and Wicke, D Wickens, JH Wilkinson, GR Winter, M Witek, M Wolf, G Yi, J Yushchenko, O Zalewska, A Zalewski, P Zavrtanik, D Zevgolatakos, E Zimin, NI Zintchenko, A and Zoller, P Zumerle, G Zupan, M DELPHI Collaboration
Publication Year :
2001

Abstract

Measurements of on-shell ZZ production are described, using data collected by DELPHI in 1997 and 1998, at centre-of-mass energies roots = 182.6 GeV and 188.6 GeV, respectively. Results obtained in each of the final states q (q) over barq (q) over bar, mu (+)mu (-) q (q) over bar e(+)e(-)q (q) over bar, nu)over bar>q (q) over bar, l(+)l(-)l(+)l(-), and nu)over bar>l(+)l(-) are presented. The measured cross-sections for on-shell ZZ production via the tree-level doubly-resonant graphs (NC02) are: sigma (NC02) (182.6 GeV) = 0.38 +/- 0.18 (stat) +/- 0.04 (syst) pb, sigma (NC02) (188.6 GeV) = 0.60+/-0.13 (stat) +/- 0.07 (syst) pb. They are consistent with the Standard Model expectations of 0.25 and 0.65 pb at each energy. (C) 2001 Published by Elsevier Science B.V.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......2127..341075096a2138168d8b3e3073523a2d

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