Diffractive photoproduction of dijets in ep collisions at HERA

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 22 Apr 2008Embargo end date: 01 Jan 2007 English Publisher:Springer Science and Business Media LLCJournal:The European Physical Journal C, volume 55, pages 177-191 (issn: 1434-6044, eissn: 1434-6052,

Copyright policy )Funded by:UKRI | RootDetect: Remote Detect..., NSERC | unidentified

Authors: Chekanov, S[ 1 ]; Derrick, M[ 1 ]; Magill, S[ 1 ]; Musgrave, B[ 1 ]; Nicholass, D[ 1 ]; Repond, J[ 1 ]; Yoshida, R[ 1 ]; +193 Authors

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; 59 ]; Antonioli; P[ 4; 59 ]; Bari; G[ 4; 59 ]; Basile; M[ 4; 59 ]; Bellagamba; L[ 4; 59 ]; Bindi; M[ 4; 59 ]; Boscherini; D[ 4; 59 ]; Bruni; A[ 4; 59 ]; Bruni; G[ 4; 59 ]; Cifarelli; L[ 4; 59 ]; Cindolo; F[ 4; 59 ]; Contin; A[ 4; 59 ]; Corradi; M[ 4; 59 ]; DE PASQUALE, Salvatore; S[ 4; 59 ]; Iacobucci; G[ 4; 59 ]; Margotti; A[ 4; 59 ]; Nania; R[ 4; 59 ]; Polini; A[ 4; 59 ]; Sartorelli; G[ 4; 59 ]; Zichichi; A[ 4; 59 ]; Bartsch, D[ 60 ]; Brock, I[ 60 ]; Hartmann, H[ 60 ]; Hilger, E[ 60 ]; Jakob, HP[ 60 ]; Jungst, M[ 60 ]; Kind, OM[ 60 ]; Nuncio Quiroz, AE[ 60 ]; Paul, E[ 60 ]; Renner, R[ 60 ]; Samson, U[ 60 ]; Schonberg, V[ 60 ]; Shehzadi, R[ 60 ]; Wlasenko, M[ 60 ]; Brook, NH[ 61 ]; Heath, GP[ 61 ]; Morris, JD[ 61 ]; Capua; M[ 62; 63 ]; Fazio; S[ 62; 63 ]; Mastroberardino; A[ 62; 63 ]; Schioppa; M[ 62; 63 ]; Susinno; G[ 62; 63 ]; Tassi; E[ 62; 63 ]; Kim, JY[ 5 ]; Ibrahim, ZA[ 6 ]; Kamaluddin, B[ 6 ]; Abdullah, WATW[ 6 ]; Ning, Y[ 7 ]; Ren, Z[ 7 ]; Sciulli, F[ 7 ]; Chwastowski, J[ 8 ]; Eskreys, A[ 8 ]; Figiel, J[ 8 ]; Galas, A[ 8 ]; Gil, M[ 8 ]; Olkiewicz, K[ 8 ]; Stopa, P[ 8 ]; Zawiejski, L[ 8 ]; Adamczyk, L[ 9 ]; Bold, T[ 9 ]; Grabowska Bold, I[ 9 ]; Kisielewska, D[ 9 ]; Lukasik, J[ 9 ]; Przybycien, M[ 9 ]; Suszycki, L[ 9 ]; Kotanski, A[ 10 ]; Slominski, W[ 10 ]; Adler, V[ 11 ]; Behrens, U; Blohm, C; Bonato, A; Borras, K; Ciesielski, R; Coppola, N; Drugakov, V; Fang, S; Fourletova, J[ 11 ]; Geiser, A[ 11 ]; Gladkov, D[ 11 ]; Gottlicher, P[ 11 ]; Grebenyuk, J[ 11 ]; Gregor, I[ 11 ]; Haas, T[ 11 ]; Hain, W[ 11 ]; Huttmann, A[ 11 ]; Kahle, B[ 11 ]; Katkov, II[ 11 ]; Klein, U[ 11 ]; Kotz, U[ 11 ]; Kowalski, H[ 11 ]; Lobodzinska, E[ 11 ]; Lohr, B[ 11 ]; Mankel, R[ 11 ]; Melzer Pellmann, IA[ 11 ]; Miglioranzi, S[ 11 ]; Montanari, A[ 11 ]; Namsoo, T[ 11 ]; Notz, D[ 11 ]; Rinaldi, L[ 11 ]; Roloff, P[ 11 ]; Rubinsky, I[ 11 ]; Santamarta, R[ 11 ]; Schneekloth, U[ 11 ]; Spiridonov; A[ 11; 55 ]; Szuba; D[ 11; 56 ]; Szuba, J[ 11 ]; Theedt, T[ 11 ]; Wolf, G[ 11 ]; Wrona, K[ 11 ]; Youngman, C[ 11 ]; Zeuner, W[ 11 ]; Lohmann, W[ 12 ]; Schlenstedt, S[ 12 ]; Barbagli; G[ 13; 14 ]; Gallo; E[ 13; 14 ]; Pelfer; PG[ 13; 14 ]; Bamberger, A[ 15 ]; Dobur, D[ 15 ]; Karstens, F[ 15 ]; Vlasov, NN[ 15 ]; Bussey; PJ[ 15; 16 ]; Doyle, AT[ 16 ]; Dunne, W[ 16 ]; Forrest, M[ 16 ]; Saxon, DH[ 16 ];

Diffractive photoproduction of dijets in ep collisions at HERA

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Abstract

Diffractive photoproduction of dijets was measured with the ZEUS detector at the ep collider HERA using an integrated luminosity of 77.2 pb-1. The measurements were made in the kinematic range Q^2 < 1 GeV^2, 0.20 < y < 0.85 and x_pom < 0.025, where Q^2 is the photon virtuality, y is the inelasticity and x_pom is the fraction of the proton momentum taken by the diffractive exchange. The two jets with the highest transverse energy, E_T^jet, were required to satisfy E_T^jet > 7.5 and 6.5 GeV, respectively, and to lie in the pseudorapidity range -1.5 < eta^jet < 1.5. Differential cross sections were compared to perturbative QCD calculations using available parameterisations of diffractive parton distributions of the proton.

31 pages, 6 figures, 5 tables, minor revisions, accepted by European Physical Journal C

Related Organizations

University of Oxford
United Kingdom
King’s University
United States
University of Padua
Italy
Polish Academy of Learning
Poland
Lomonosov Moscow State University
Russian Federation

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Keywords

Physics and Astronomy (miscellaneous), FOS: Physical sciences, Sciences de l'ingénieur, diffraction: structure function, 530, x-dependence, rapidity dependence, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics; HERA; ZEUS Collaboration, jet: transverse energy, quantum chromodynamics: perturbation theory, photon: resolved, info:eu-repo/classification/ddc/530, parton: momentum spectrum, 318 GeV-cms, Engineering (miscellaneous), Physique, parametrization, differential cross section: momentum transfer dependence, ZEUS, Astronomie, jet: hadroproduction, mass dependence, positron p: colliding beams, DESY HERA Stor, electron p: colliding beams, jet: pair production, jet: rapidity, experimental results

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