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Derrick, M.; Musgrave, B.; Yoshida, R.; Mattingly, M.C.K.; Bari, G.; Basile, M.; Bindi, M.; Cindolo, F.; De Pasquale, S.; Iacobucci, G.; Bartsch, D.; Brock, I.; Hilger, E.; Jakob, H.-P.; Jüngst, M.; Paul, E.; Capua, M.; Fazio, S.; Susinno, G.; Tassi, E.; Kim, J.Y.; Ibrahim, Z.A.; Wan Abdullah, W.A.T.; Sciulli, F.; Eskreys, A.; Blohm, C.; Bonato, A.; Fang, S.; Gladkov, D.; Klein, U.; Melzer-Pellmann, I.-A.; Miglioranzi, S.; Namsoo, T.; Notz, D.; Bamberger, A.; Dobur, D.; Skillicorn, I.O.; Holm, U.; Klanner, R.; Schörner-Sadenius, T.; Turcato, M.; Foudas, C.; Tapper, A.D.; Tokushuku, K.; Boos, E.G.; Borodin, M.; Lisovyi, M.; Son, D.; Piotrzkowski, K.; Barreiro, F.; Labarga, L.; Soares, M.; Terrón, J.; Zambrana, M.; Corriveau, F.; Suchkov, S.; Ermolov, P.F.; Gladilin, L.K.; Korzhavina, I.A.; Kuzmin, V.A.; Levchenko, B.B.; Proskuryakov, A.S.; Büttner, C.; Tiecke, H.; Brümmer, N.; Bylsma, B.; Lee, A.; Ferrando, J.; Korcsak-Gorzo, K.; Uribe-Estrada, C.; Bellan, P.; Brugnera, R.; Carlin, R.; Longhin, A.; Stanco, L.; Turcato, M.; Whitmore, J.J.; Iga, Y.; Stern, A.; Hori, R.; Kagawa, S.; Okazaki, N.; Shimizu, S.; Kitamura, S.; Ota, O.; Ferrero, M.I.; Martin, J.F.; Jones, T.W.; Pawlak, J.M.; Tymieniecka, T.; Adamus, M.; Plucinski, P.; Giller, I.; Rosin, M.; Brownson, E.; Ryan, P.; Smith, W.H.; Wolfe, H.; Bhadra, S.; Noor, U.
The European physical journal. C, Particles and fields, 05/2008, Letnik: 55, Številka: 2Journal Article
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 IP <0.025, where Q 2 is the photon virtuality, y is the inelasticity and x IP 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<η jet <1.5. Differential cross sections were compared to perturbative QCD calculations using available parameterisations of diffractive parton distributions of the proton.
