1. Multi-lepton production at high transverse momentum at HERA
- Author
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Chekanov, S[ 1 ], Derrick, M[ 1 ], Magill, S[ 1 ], Musgrave, B[ 1 ], Nicholass, D[ 1 ], Repond, J[ 1 ], Yoshida, R[ 1 ], Mattingly, MCK[ 2 ], Antonioli, P[ 3 ], Bari, G[ 3 ], Bellagamba, L[ 3 ], Boscherini, D[ 3 ], Bruni, A[ 3 ], Bruni, G[ 3 ], Cindolo, F[ 3 ], Corradi, M[ 3 ], Lacobucci, G[ 3 ], Margotti, A[ 3 ], Nania, R[ 3 ], Polini, A[ 3 ], Antonelli, S[, 3, 4 ], Basile, M[, 3, 4 ], Bindi, 4 ], Cifarelli, L[, 3, 4 ], Contin, A[, 3, 4, ], DE PASQUALE, Salvatore, 4 ], Sartorelli, G[, 3, 4 ], Zichichi, Bartsch, D[ 5 ], Brock, I[ 5 ], Hartmann, H[ 5 ], Hilger, E[ 5 ], Jakob, HP[ 5 ], Jungst, M[ 5 ], Nuncio Quiroz, AE[ 5 ], Paul, E[ 5 ], Samson, U[ 5 ], Schonberg, V[ 5 ], Shehzadi, R[ 5 ], Wlasenko, M[ 5 ], Morris, JD[ 6 ], Kaur, M[ 7 ], Kaur, R[, 7, 62, ], Singh, I[, 7, Capua, M[, 8, 9 ], Fazio, S[, 8, 9 ], Mastroberardino, A[, 8, 9 ], Schioppa, 9 ], Susinno, G[, 8, 9 ], Tassi, E[, 8, 9, ], Kim, JY[ 10 ], Ibrahim, ZA[ 11 ], Idris, FM[ 11 ], Kamaluddin, B[ 11 ], Abdullah, WAW[ 11 ], Ning, Y[ 12 ], Ren, Z[ 12 ], Sciulli, F[ 12 ], Chwastowski, J[ 13 ], Eskreys, A[ 13 ], Figiel, J[ 13 ], Galas, A[ 13 ], Olkiewicz, K[ 13 ], Pawlik, B[ 13 ], Stopa, R[ 13 ], Zawiejski, L[ 13 ], Adamczyk, L[ 14 ], Bold, T[ 14 ], Grabowska Bold, I[ 14 ], Kisielewska, D[ 14 ], Lukasik, J[ 14 ], Przybycien, M[ 14 ], Suszycki, L[ 14 ], Kotanski, A[ 15 ], Slominski, W[ 15 ], Behnke, O[ 16 ], Behr, J[ 16 ], Behrens, U[ 16 ], Blohm, C[ 16 ], Borras, K[ 16 ], Bot, D[ 16 ], Ciesielski, R[ 16 ], Coppola, N[ 16 ], Fang, S[ 16 ], Geiser, A[ 16 ], Gottlicher, P[ 16 ], Grebenyuk, J[ 16 ], Gregor, I[ 16 ], Haas, T[ 16 ], Hain, W[ 16 ], Huttmann, A[ 16 ], Januschek, F[ 16 ], Kahle, B[ 16 ], Katkov, II[ 16 ], Klein, U[ 16 ], Kotz, U[ 16 ], Kowalski, H[ 16 ], Lisovyi, M[ 16 ], Lobodzinska, E[ 16 ], Lohr, B[ 16 ], Mankel, R[ 16 ], Melzer Pellmann, IA[ 16 ], Miglioranzi, S[ 16 ], Montanari, A[ 16 ], Namsoo, T[ 16 ], Notz, D[ 16 ], Parenti, A[ 16 ], Roloff, P[ 16 ], Rubinsky, I[ 16 ], Schneekloth, U[ 16 ], Spiridonov, A[, 16, 63, ], Szuba, D[, 16, 64, ], J[, 16, 65, ], Theedt, T[ 16 ], Tomaszewska, J[ 16 ], Wolf, G[ 16 ], Wrona, K[ 16 ], Yagues Molina, AG[ 16 ], Youngman, C[ 16 ], Zeuner, W[ 16 ], Drugakov, V[ 17 ], Lohmann, W[ 17 ], Schlenstedt, S[ 17 ], Barbagli, G[ 18 ], Gallo, E[ 18 ], Pelfer, Pg[, 18, 19, ], Bamberger, A[ 20 ], Dobur, D[ 20 ], Karstens, F[ 20 ], Vlasov, NN[ 20 ], Bussey, PJ[ 21 ], Doyle, AT[ 21 ], Forrest, M[ 21 ], Saxon, DH[ 21 ], Skillicorn, IO[ 21 ], Gialas, I[, 22, 66, ], Papageorgiu, K[ 22 ], Holm, U[ 23 ], Klanner, R[ 23 ], Lohrmann, E[ 23 ], Perrey, H[ 23 ], Schleper, P[ 23 ], Schorner Sadenius, T[ 23 ], Sztuk, J[ 23 ], Stadie, H[ 23 ], Turcato, M[ 23 ], Long, KR[ 24 ], Tapper, AD[ 24 ], Matsumoto, T[ 25 ], Nagano, K[ 25 ], Tokushuku, K[ 25 ], Yamada, S[ 25 ], Yamazaki, Y[ 25 ], Barakbaev, AN[ 26 ], Boos, EG[ 26 ], Pokrovskiy, NS[ 26 ], Zhautykov, BO[ 26 ], Aushev, V[, 27, 28, ], Bachynska, O[, 27, Borodin, M[, 27, Kadenko, I[, 27, Kuprash, Libov, Lontkovskyi, D[, 27, Makarenko, Sorokin, Verbytskyi, A[, 27, Volynets, Zolko, Son, D[ 29 ], de Favereau, J[ 30 ], Piotrzkowski, K[ 30 ], Barreiro, F[ 31 ], Glasman, C[ 31 ], Jimenez, M[ 31 ], del Peso, J[ 31 ], Ron, E[ 31 ], Terron, J[ 31 ], Uribe Estrada, C[ 31 ], Corriveau, F[ 32 ], Schwartz, J[ 32 ], Zhou, C[ 32 ], Tsurugai, T[ 33 ], Antonov, A[ 34 ], Dolgoshein, BA[ 34 ], Gladkov, D[ 34 ], Sosnovtsev, V[ 34 ], Stifutkin, A[ 34 ], Suchkov, S[ 34 ], Dementiev, RK[ 35 ], Ermolov, PF[ 35 ], Gladilin, LK[ 35 ], Golubkov, YA[ 35 ], Khein, LA[ 35 ], Korzhavina, IA[ 35 ], Kuzmin, VA[ 35 ], Levchenko, BB[ 35 ], Lukina, OY[ 35 ], Proskuryakov, AS[ 35 ], Shcheglova, LM[ 35 ], Zotkin, DS[ 35 ], Abt, I[ 36 ], Caldwell, A[ 36 ], Kollar, D[ 36 ], Reisert, B[ 36 ], Schmidke, WB[ 36 ], Grigorescu, G[, 37, 38, ], Keramidas, A[, 37, Koffeman, E[, 37, Kooijman, P[, 37, Pellegrino, Tiecke, H[, 37, Vazquez, M[, 37, Wiggers, L[, 37, Brummer, N[ 39 ], Bylsma, B[ 39 ], Durkin, LS[ 39 ], Lee, A[ 39 ], Ling, TY[ 39 ], Cooper Sarkar, AM[ 40 ], Devenish, RCE[ 40 ], Ferrando, J[ 40 ], Foster, B[ 40 ], Gwenlan, C[ 40 ], Horton, K[ 40 ], Oliver, K[ 40 ], Robertson, A[ 40 ], Walczak, R[ 40 ], Bertolin, A[ 41 ], Dal Corso, F[ 41 ], Dusini, S[ 41 ], Longhin, A[ 41 ], Stanco, L[ 41 ], Brugnera, R[, 41, 42, ], Carlin, Garfagnini, A[, 41, Limentani, S[, 41, BY[ 43 ], Oh, Raval, A[ 43 ], Whitmore, JJ[ 43 ], Iga, Y[ 44 ], D'Agostini, G[, 45, 46, ], Marini, Nigro, A[, 45, Hart, JC[ 47 ], Abramowicz, H[, 48, Ingbir, R[ 48 ], Kananov, S[ 48 ], Levy, A[ 48 ], Stern, A[ 48 ], Ishitsuka, M[ 49 ], Kanno, T[ 49 ], Kuze, M[ 49 ], Maeda, J[ 49 ], Hori, R[ 50 ], Kagawa, S[ 50 ], Okazaki, N[ 50 ], Shimizu, S[ 50 ], Tawara, T[ 50 ], Hamatsu, R[ 51 ], Kaji, H[ 51 ], Kitamura, S[ 51 ], Ota, O[ 51 ], YD[ 51 ], Ri, Costa, M[, 52, 53, ], Ferrero, Mi[, 52, Monaco, V[, 52, Sacchi, R[, 52, Sola, Solano, A[, 52, Arneodo, M[, 53, 54, ], Ruspa, Fourletov, S[ 55 ], Martin, JF[ 55 ], Stewart, TP[ 55 ], Boutle, SK[ 56 ], Butterworth, JM[ 56 ], Jones, TW[ 56 ], Loizides, JH[ 56 ], Wing, M[, 56, 23, ], Brzozowska, B[ 57 ], Ciborowski, J[, 57, 67, ], Grzelak, G[ 57 ], Kulinski, P[ 57 ], Luzniak, P[ 57 ], Malka, J[ 57 ], Nowak, RJ[ 57 ], Pawlak, JM[ 57 ], Perlanski, W[ 57 ], Zarnecki, AF[ 57 ], Adamus, M[ 58 ], Plucinski, P[ 58 ], Tymieniecka, T[ 58 ], Eisenberg, Y[ 59 ], Hochman, D[ 59 ], Karshon, U[ 59 ], Brownson, E[ 60 ], Reeder, DD[ 60 ], Savin, AA[ 60 ], Smith, WH[ 60 ], Wolfe, H[ 60 ], Bhadra, S[ 61 ], Catterall, CD[ 61 ], Hartner, G[ 61 ], Noor, U[ 61 ], Whyte, J., UCL - SC/PHYS - Département de physique, S. CHEKANOV, M. DERRICK, S. MAGILL, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, S. ANTONELLI, M. BASILE, M. BINDI, L. CIFARELLI, A. CONTIN, S. DE PASQUALE, G. SARTORELLI, A. ZICHICHI, D. BARTSCH, I. BROCK, H. HARTMANN, E. HILGER, H.-P. JAKOB, M. JÜNGST, A.E. NUNCIO-QUIROZ, E. PAUL, U. SAMSON, V. SCHÖNBERG, R. SHEHZADI, M. WLASENKO, J.D. MORRIS, M. KAUR, P. KAUR, I. SINGH, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, Z.A. IBRAHIM, F. MOHAMAD IDRIS, B. KAMALUDDIN, W.A.T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, B. PAWLIK, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, O. BEHNKE, J. BEHR, U. BEHRENS, C. BLOHM, K. BORRAS, D. BOT, R. CIESIELSKI, N. COPPOLA, S. FANG, A. GEISER, P. GÖTTLICHER, J. GREBENYUK, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, A. HÜTTMANN, J. JANUSCHEK, B. KAHLE, I.I. KATKOV, U. KLEIN, U. KÖTZ, H. KOWALSKI, M. LISOVYI, E. LOBODZINSKA, B. LÖHR, R. MANKEL, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, A. MONTANARI, T. NAMSOO, D. NOTZ, A. PARENTI, P. ROLOFF, I. RUBINSKY, U. SCHNEEKLOTH, A. SPIRIDONOV, D. SZUBA, J. SZUBA, T. THEEDT, G. WOLF, K. WRONA, A.G. YAGUES MOLINA, C. YOUNGMAN, W. ZEUNER, V. DRUGAKOV, W. LOHMANN, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, P. G. PELFER, A. BAMBERGER, D. DOBUR, F. KARSTENS, N.N. VLASOV, P.J. BUSSEY, A.T. DOYLE, M. FORREST, M. ROSIN, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, K. PAPAGEORGIU, U. HOLM, R. KLANNER, E. LOHRMANN, H. PERREY, P. SCHLEPER, T. SCHORNER-SADENIUS, J. SZTUK, H.STADIE, M. TURCATO, K.R. LONG, A.D. TAPPER, T. MATSUMOTO, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, V. AUSHEV, O. BACHYNSKA, M. BORODIN, I. KADENKO, A. KOZULIA, V. LIBOV, D. LONTKOVSKYI, I. MAKARENKO, IU. SOROKIN, A. VERBYTSKYI, O. VOLYNETS, M. ZOLKO, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, J. DEL PESO, E. RON, J. TERRON, C. URIBE-ESTRADA, F. CORRIVEAU, J. SCHWARTZ, C. ZHOU, T. TSURUGAI, A. ANTONOV, B.A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F.ERMOLOV, L.K. GLADILIN, YU.A. GOLUBKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A.KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, I. ABT, A. CALDWELL, D. KOLLAR, B. REISERT, W.B. SCHMIDKE, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VÁZQUEZ, L. WIGGERS, N. BRÜMMER, B. BYLSMA, L.S. DURKIN, A. LEE, T.Y. LING, A.M. COOPER-SARKAR, R.C.E. DEVENISH, J. FERRANDO, B.FOSTER, C. GWENLAN, K. HORTON, K. OLIVER, A. ROBERTSON, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, B.Y. OH, A. RAVAL, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.C. HART, H. ABRAMOWICZ, R. INGBIR, S. KANANOV, A. LEVY, A. STERN, M. ISHITSUKA, T. KANNO, M. KUZE, J. MAEDA, R. HORI, S. KAGAWA, N. OKAZAKI, S. SHIMIZU, T. TAWARA, R. HAMATSU, H. KAJI, S. KITAMURA, O. OTA, Y.D. RI, M.COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, V. SOLA, M. ARNEODO, M. RUSPA, S. FOURLETOV, J.F. MARTIN, T.P. STEWART, S.K. BOUTLE, J.M. BUTTERWORTH, T.W. JONES, J.H. LOIZIDES, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R.J.NOWAK, J.M. PAWLAK, W. PERLANSKI, T. TYMIENIECKA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, E. BROWNSON, D.D. REEDER, A.A. SAVIN, W.H. SMITH, H. WOLFE, S. BHADRA, C.D. CATTERALL, G. HARTNER, U. NOOR, J. WHYTE, and Zeus (IHEF, IoP, FNWI)
- Subjects
Particle physics ,Nuclear and High Energy Physics ,HERA ,FOS: Physical sciences ,01 natural sciences ,7. Clean energy ,Standard Model ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics ,ZEUS Collaboration ,0103 physical sciences ,Invariant mass ,ddc:530 ,010306 general physics ,Physics ,Luminosity (scattering theory) ,ZEUS (particle detector) ,010308 nuclear & particles physics ,Detector ,Phase space ,High Energy Physics::Experiment ,Lepton - Abstract
A search for events containing two or more high-transverse-momentum isolated leptons has been performed in ep collisions with the ZEUS detector at HERA using the full collected data sample, corresponding to an integrated luminosity of 480 pb^{-1}. The number of observed events has been compared with the prediction from the Standard Model, searching for possible deviations, especially for multi-lepton events with invariant mass larger than 100 GeV. Good agreement with the Standard Model has been observed. Total and differential cross sections for di-lepton production have been measured in a restricted phase space dominated by photon-photon collisions., Comment: 18 pages, 5 figures. v2: revised version for journal publication
- Published
- 2009