1. High-ET Dijet Photoproduction at HERA
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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 ], Jechow, M[ 3 ], Pavel, N[ 3 ], Molina, AGY[ 3 ], Antonelli, S[ 4 ], Antonioli, P[ 4 ], Bari, G[ 4 ], Basile, M[ 4 ], Bellagamba, L[ 4 ], Bindi, M[ 4 ], Boscherini, D[ 4 ], Bruni, A[ 4 ], Bruni, G[ 4 ], Cifarelli, L[ 4 ], Cindolo, F[ 4 ], Contin, A[ 4 ], Corradi, M[ 4 ], DE PASQUALE, Salvatore, Iacobucci, G[ 4 ], Margotti, A[ 4 ], Nania, R[ 4 ], Polini, A[ 4 ], Sartorelli, G[ 4 ], Zichichi, A[ 4 ], Bartsch, D[ 5 ], Brock, I[ 5 ], Goers, S[ 5 ], Hartmann, H[ 5 ], Hilger, E[ 5 ], Jakob, HP[ 5 ], Jungst, M[, 5, 27, ], Kind, OM[ 5 ], Nuncio Quiroz, AE[ 5 ], Paul, E[ 5 ], Renner, R[ 5 ], Samson, U[ 5 ], Schonberg, V[ 5 ], Shehzadi, R[ 5 ], Wlasenko, M[ 5 ], Brook, NH[ 6 ], Heath, GP[ 6 ], Morris, JD[ 6 ], Capua, M[ 7 ], Fazio, S[ 7 ], Mastroberardino, A[ 7 ], Schioppa, M[ 7 ], Susinno, G[ 7 ], Tassi, E[ 7 ], Kim, JY[ 8 ], KJ[ 8 ], Ma, Ibrahim, ZA[ 9 ], Kamaluddin, B[ 9 ], Abdullah, WATW[ 9 ], Ning, Y[ 10 ], Ren, Z[ 10 ], Sciulli, F[ 10 ], Chwastowski, J[ 11 ], Eskreys, A[ 11 ], Figiel, J[ 11 ], Galas, A[ 11 ], Gil, M[ 11 ], Olkiewicz, K[ 11 ], Stopa, P[ 11 ], Zawiejski, L[ 11 ], Adamczyk, L[ 12 ], Bold, T[ 12 ], Grabowska Bold, I[ 12 ], Kisielewska, D[ 12 ], Lukasik, J[ 12 ], Przybycien, M[ 12 ], Suszycki, L[ 12 ], Kotanski, A[ 13 ], Slominski, W[ 13 ], Adler, V[ 14 ], Behrens, U[ 14 ], Bloch, I[ 14 ], Blohm, C[ 14 ], Bonato, A[ 14 ], Borras, K[ 14 ], Ciesielski, R[ 14 ], Coppola, N[ 14 ], Dossanov, A[ 14 ], Drugakov, V[ 14 ], Fourletova, J[ 14 ], Geiser, A[ 14 ], Gladkov, D[ 14 ], Gottlicher, P[ 14 ], Grebenyuk, J[ 14 ], Gregor, I[ 14 ], Haas, T[ 14 ], Hain, W[ 14 ], Horn, C[ 14 ], Huttmann, A[ 14 ], Kahle, B[ 14 ], Katkov, II[ 14 ], Klein, U[ 14 ], Koetz, U[ 14 ], Kowalski, H[ 14 ], Lobodzinska, E[ 14 ], Lohr, B[ 14 ], Mankel, R[ 14 ], Melzer Pellmann, IA[ 14 ], Miglioranzi, S[ 14 ], Montanari, A[ 14 ], Namsoo, T[ 14 ], Notz, D[ 14 ], Rinaldi, L[ 14 ], Roloff, P[ 14 ], Rubinsky, I[ 14 ], Santamarta, R[ 14 ], Schneekloth, U[ 14 ], Spiridonov, A[ 14 ], Stadie, H[ 14 ], Szuba, D[ 14 ], Szuba, J[ 14 ], Theedt, T[ 14 ], Wolf, G[ 14 ], Wrona, K[ 14 ], Youngman, C[ 14 ], Zeuner, W[ 14 ], Lohmann, W[ 15 ], Schlenstedt, S[ 15 ], Barbagli, G[ 16 ], Gallo, E[ 16 ], Pelfer, PG[ 16 ], Bamberger, A[ 17 ], Dobur, D[ 17 ], Karstens, F, Vlasov, NN[ 17 ], Bussey, Pj, Doyle, AT[ 18 ], Dunne, W[ 18 ], Ferrando, J[ 18 ], Forrest, M[ 18 ], Saxon, DH[ 18 ], Skillicorn, IO[ 18 ], Gialas, I[ 19 ], Papageorgiu, K[ 19 ], Gosau, T[ 20 ], Holm, U[ 20 ], Klanner, R[ 20 ], Lohrmann, E[ 20 ], Perrey, H[ 20 ], Salehi, H[ 20 ], Schleper, P[ 20 ], Schorner Sadenius, T[ 20 ], Sztuk, J[ 20 ], Wichmann, K[ 20 ], Wick, K[ 20 ], Foudas, C[ 21 ], Fry, C[ 21 ], Long, KR[ 21 ], Tapper, AD[ 21 ], Kataoka, M[ 22 ], Matsumoto, T[ 22 ], Nagano, K[ 22 ], Tokushuku, K[ 22 ], Yamada, S[ 22 ], Yamazaki, Y[ 22 ], Barakbaev, AN[ 23 ], Boos, EG[ 23 ], Pokrovskiy, NS[ 23 ], Zhautykov, BO[ 23 ], Aushev, V[ 24 ], Son, D[ 25 ], De Favereau, J[ 26 ], Piotrzkowski, K[ 26 ], Barreiro, F[ 27 ], Glasman, C[ 27 ], Jimenez, M[ 27 ], Labarga, L[ 27 ], Del Peso, J[ 27 ], Ron, E[ 27 ], Soares, M[ 27 ], Terron, J[ 27 ], Zambrana, M[ 27 ], Corriveau, F[ 28 ], Liu, C[ 28 ], Walsh, R[ 28 ], Zhou, C[ 28 ], Tsurugai, T[ 29 ], Antonov, A[, 18, 30, ], Dolgoshein, BA[ 30 ], Sosnovtsev, V[ 30 ], Stifutkin, A[ 30 ], Suchkov, S[ 30 ], Dementiev, RK[ 31 ], Ermolov, PF[ 31 ], Gladilin, LK[ 31 ], Khein, LA[ 31 ], Korzhavina, IA[ 31 ], Kuzmin, VA[ 31 ], Levchenko, BB[ 31 ], Lukina, OY[ 31 ], Proskuryakov, AS[ 31 ], Shcheglova, LM[ 31 ], Zotkin, DS[ 31 ], Zotkin, SA[ 31 ], Abt, I[ 32 ], Buttner, C[ 32 ], Caldwell, A[ 32 ], Kollar, D[ 32 ], Schmidke, WB[ 32 ], Sutiak, J[ 32 ], Grigorescu, G[ 33 ], Keramidas, A[ 33 ], Koffeman, E[ 33 ], Kooijman, P[ 33 ], Pellegrino, A[ 33 ], Tiecke, H[ 33 ], Vazquez, M[ 33 ], Wiggers, L[ 33 ], Brummer, N[ 34 ], Bylsma, B[ 34 ], Durkin, LS[ 34 ], Lee, A[ 34 ], Ling, TY[ 34 ], Allfrey, PD[ 35 ], Bell, MA[ 35 ], Cooper Sarkar, AM[ 35 ], Cottrell, A[ 35 ], Devenish, RCE[ 35 ], Foster, B[ 35 ], Korcsak Gorzo, K[ 35 ], Patel, S[ 35 ], Roberfroid, V[ 35 ], Robertson, A[ 35 ], Straub, PB[ 35 ], Uribe Estrada, C[ 35 ], Walczak, R[ 35 ], Bellan, P[ 36 ], Bertolin, A[ 36 ], Brugnera, R[ 36 ], Carlin, R[ 36 ], Dal Corso, F[ 36 ], Dusini, S[ 36 ], Garfagnini, A[ 36 ], Limentani, S[ 36 ], Longhin, A[ 36 ], Stanco, L[ 36 ], Turcato, M[ 36 ], BY[ 37 ], Oh, Raval, A[ 37 ], Ukleja, J[ 49 ], Whitmore, JJ[ 37 ], Iga, Y[ 38 ], D'Agostini, G[ 39 ], Marini, G[ 39 ], Nigro, A[ 39 ], Cole, JE[ 40 ], Hart, JC[ 40 ], Abramowicz, H[ 41 ], Gabareen, A[ 41 ], Ingbir, R[ 41 ], Kananov, S[ 41 ], Levy, A[ 41 ], Kuze, M[ 42 ], Maeda, J[ 42 ], Hori, R[ 43 ], Kagawa, S[ 43 ], Okazaki, N[ 43 ], Shimizu, S[ 43 ], Tawara, T[ 43 ], Hamatsu, R[ 44 ], Kaji, H[ 44 ], Kitamura, S[ 44 ], Ota, O[ 44 ], YD[ 44 ], Ri, Ferrero, MI[ 45 ], Monaco, V[ 45 ], Sacchi, R[ 45 ], Solano, A[ 45 ], Arneodo, M[ 46 ], Ruspa, M[ 46 ], Fourletov, S[ 47 ], Martin, JF[ 47 ], Boutle, SK[ 48 ], Butterworth, JM[ 48 ], Gwenlan, C[ 48 ], Jones, TW[ 48 ], Loizides, JH[ 48 ], Sutton, MR[ 48 ], Targett Adams, C[ 48 ], Wing, M[ 48 ], Brzozowska, B[ 49 ], Ciborowski, J[ 49 ], Grzelak, G[ 49 ], Kulinski, P[ 49 ], Luzniak, P[, 18, 49, ], Malka, J[ 49 ], Nowak, RJ[ 49 ], Pawlak, JM[ 49 ], Tymieniecka, T[ 49 ], Ukleja, J, Zarnecki, AF[ 49 ], Adamus, M[ 50 ], Plucinski, P[ 50 ], Eisenberg, Y[ 51 ], Giller, I[ 51 ], Hochman, D[ 51 ], Karshon, U[ 51 ], Rosin, M[ 51 ], Brownson, E[ 52 ], Danielson, T[ 52 ], Everett, A[ 52 ], Kcira, D[ 52 ], Reeder, DD[ 52 ], Ryan, P[ 52 ], Savin, AA[ 52 ], Smith, WH[ 52 ], Wolfe, H[ 52 ], Bhadra, S[ 53 ], Catterall, CD[ 53 ], Cui, Y[ 53 ], Hartner, G[ 53 ], Menary, S[ 53 ], Noor, U[ 53 ], Standage, J[ 53 ], Whyte, J., S. CHEKANOV, M. DERRICK, S. MAGILL, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, M. JECHOW, N. PAVEL, A.G. YAGUES MOLINA, S. ANTONELLI, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, M. BINDI, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, S. DE PASQUALE, G. IACOBUCCI, A. MARGOTTI, R. NANIA, A. POLINI, G. SARTORELLI, A. ZICHICHI, D. BARTSCH, I. BROCK, H. HARTMANN, E. HILGER, H.-P. JAKOB, M. JUNGST, O.M. KIND, A.E. NUNCIO-QUIROZ, E. PAUL, R. RENNER, U. SAMSON, V. SCHOENBERG, R. SHEHZADI, M. WLASENKO, N.H. BROOK, G.P. HEATH, J.D. MORRIS, M. CAPUA, S. FAZIO, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, E. TASSI, J.Y. KIM, K.J. MA, Z.A. IBRAHIM, B. KAMALUDDIN, W.A.T. WAN ABDULLAH, Y. NING, Z. REN, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, M. GIL, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T.BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, C. BLOHM, A. BONATO, K. BORRAS, R. CIESIELSKI, N. COPPOLA, A. DOSSANOV, V. DRUGAKOV, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GOETTLICHER, J. GREBENYUK, I. GREGOR, T. HAAS, W. HAIN, C. HORN, A. HUTTMANN, B. KAHLE, I.I. KATKOV, U. KLEIN, U. KOETZ, H. KOWALSKI, E. LOBODZINSKA, B. LOEHR, R. MANKEL, I.-A. MELZER-PELLMANN, S. MIGLIORANZI, A. MONTANARI, T. NAMSOO, D. NOTZ, L. RINALDI, P. ROLOFF, I. RUBINSKY, R. SANTAMARTA, U. SCHNEEKLOTH, A. SPIRIDONOV, H. STADIE, D. SZUBA, J. SZUBA, T. THEEDT, G. WOLF, K. WRONA, C. YOUNGMAN, W. ZEUNER, 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, W. DUNNE, M. FORREST, D.H. SAXON, I.O. SKILLICORN, I.GIALAS, K. PAPAGEORGIU, T. GOSAU, U. HOLM, R. KLANNER, E. LOHRMANN, H. SALEHI, P. SCHLEPER, T. SCHOERNER-SADENIUS, J. SZTUK, K. WICHMANN, K. WICK, C. FOUDAS, C. FRY, K.R. LONG, A.D. TAPPER, M. KATAOKA, T. MATSUMOTO, K. NAGANO, K.TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, V. AUSHEV, M. BORODIN, A. KOZULIA, M. LISOVYI, D. SON, J. DE FAVEREAU, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, M. JIMENEZ, L. LABARGA, J. DEL PESO, E. RON, M. SOARES, J. TERRON, M. ZAMBRANA, F. CORRIVEAU, C. LIU, R. WALSH, C. ZHOU, T. TSURUGAI, A. ANTONOV, B.A. DOLGOSHEIN, V. SOSNOVTSEV, A. STIFUTKIN, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, L.K. GLADILIN, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, D. KOLLAR, W.B. SCHMIDKE, J. SUTIAK, G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VAZQUEZ, L. WIGGERS, N. BRUMMER, B. BYLSMA, L.S. DURKIN, A. LEE, T.Y. LING, P.D. ALLFREY, M.A. BELL, A.M. COOPER-SARKAR, R.C.E. DEVENISH, J. FERRANDO, B. FOSTER, K. KORCSAK-GORZO, K. OLIVER, S. PATEL, V. ROBERFROID, A. ROBERTSON, P.B. STRAUB, C. URIBE-ESTRADA, R. WALCZAK, P. BELLAN, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, L. STANCO, M. TURCATO, B.Y. OH, A. RAVAL, J. UKLEJA, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, J.E. COLE, J.C. HART, H. ABRAMOWICZ, A. GABAREEN, R. INGBIR, S. KANANOV, A. KREISEL, A. LEVY, O. SMITH, A. STERN, 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.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, S. FOURLETOV, J.F. MARTIN, S.K. BOUTLE, J.M. BUTTERWORTH, C. GWENLAN, T.W. JONES, J.H. LOIZIDES, M.R. SUTTON, M. WING, B. BRZOZOWSKA, J. CIBOROWSKI, G. GRZELAK, P. KULINSKI, P. LUZNIAK, J. MALKA, R.J. NOWAK, J.M. PAWLAK, T. TYMIENIECKA, A. UKLEJA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, I. GILLER, D. HOCHMAN, U. KARSHON, M. ROSIN, E. BROWNSON, T. DANIELSON, A. EVERETT, D.KCIRA, D.D. REEDER, P. RYAN, A.A. SAVIN, W.H. SMITH, H. WOLFE, S. BHADRA, C.D. CATTERALL, Y. CUI, G. HARTNER, S. MENARY, U. NOOR, J. STANDAGE, and J. WHYTE
- Subjects
Nuclear and High Energy Physics ,Particle physics ,HERA ,FOS: Physical sciences ,7. Clean energy ,01 natural sciences ,High Energy Physics - Experiment ,ENERGY ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics ,ZEUS Collaboration ,0103 physical sciences ,ddc:530 ,010306 general physics ,Nuclear Experiment ,Physics ,CONSTRUCTION ,010308 nuclear & particles physics ,LEADING ORDER ,ZEUS BARREL CALORIMETER ,JET CROSS-SECTIONS ,CENTRAL TRACKING DETECTOR ,PHYSICS EVENT GENERATION ,PARTON DISTRIBUTIONS ,HADRON-COLLISIONS ,PHOTON ,High Energy Physics::Experiment - Abstract
The cross section for high-E_T dijet production in photoproduction has been measured with the ZEUS detector at HERA using an integrated luminosity of 81.8 pb-1. The events were required to have a virtuality of the incoming photon, Q^2, of less than 1 GeV^2 and a photon-proton centre-of-mass energy in the range 142 < W < 293 GeV. Events were selected if at least two jets satisfied the transverse-energy requirements of E_T(jet1) > 20 GeV and E_T(jet2) > 15 GeV and pseudorapidity requirements of -1 < eta(jet1,2) < 3, with at least one of the jets satisfying -1 < eta(jet) < 2.5. The measurements show sensitivity to the parton distributions in the photon and proton and effects beyond next-to-leading order in QCD. Hence these data can be used to constrain further the parton densities in the proton and photon., 36 pages, 13 figures, 20 tables, including minor revisions from referees. Accepted by Phys. Rev. D
- Published
- 2007
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