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Abt, I.; Aushev, V.; Aushev, Y.; Behnke, O.; Behrens, U.; Bertolin, A.; Bloch, I.; Boos, E.G.; Borras, K.; Brock, I.; Brugnera, R.; Bruni, A.; Bussey, P.J.; Chwastowski, J.; Ciborowski, J.; Ciesielski, R.; Cooper-Sarkar, A.M.; Corradi, M.; Corriveau, F.; Dusini, S.; Figiel, J.; Foster, B.; Gach, G.; Garfagnini, A.; Geiser, A.; Gladilin, L.K.; Golubkov, Yu.A.; Grebenyuk, J.; Gregor, I.; Guzik, M.; Hain, W.; Hochman, D.; Hori, R.; Ishitsuka, M.; Iudin, A.; Jomhari, N.Z.; Kananov, S.; Karshon, U.; Kaur, M.; Kisielewska, D.; Klanner, R.; Klein, U.; Kondrashova, N.; Korol, Ie; Korzhavina, I.A.; Kötz, U.; Kowalski, H.; Krupa, B.; Levy, A.; Libov, V.; Lobodzinska, E.; Löhr, B.; Lohrmann, E.; Longhin, A.; Lukina, O.Yu; Malka, J.; Mergelmeyer, S.; Mohamad Idris, F.; Mohammad Nasir, N.; Nagano, K.; Onishchuk, Yu; Paul, E.; Perlański, W.; Pokrovskiy, N.S.; Przybycień, M.; Roloff, P.; Schmidke, W.B.; Schneekloth, U.; Schörner-Sadenius, T.; Shcheglova, L.M.; Shevchenko, R.; Singh, I.; Skillicorn, I.O.; Słomiński, W.; Solano, A.; Stanco, L.; Stefaniuk, N.; Stern, A.; Stopa, P.; Szuba, J.; Tassi, E.; Tokushuku, K.; Tomaszewska, J.; Trofymov, A.; Tsurugai, T.; Turkot, O.; Tymieniecka, T.; Verbytskyi, A.; Walczak, R.; Wan Abdullah, W.A.T.; Wing, M.; Yamada, S.; Yamazaki, Y.; Zakharchuk, N.; Żarnecki, A.F.; Zawiejski, L.; Zenaiev, O.; Zhautykov, B.O.; Zhmak, N.; Zotkin, D.S.
Nuclear physics. B, August 2016, 2016-08-01, Volume: 909, Issue: CJournal Article
The exclusive deep inelastic electroproduction of ψ(2S) and J/ψ(1S) at an ep centre-of-mass energy of 317 GeV has been studied with the ZEUS detector at HERA in the kinematic range 2<Q2<80 GeV2, 30<W<210 GeV and |t|<1 GeV2, where Q2 is the photon virtuality, W is the photon–proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The data for 2<Q2<5 GeV2 were taken in the HERA I running period and correspond to an integrated luminosity of 114 pb−1. The data for 5<Q2<80 GeV2 are from both HERA I and HERA II periods and correspond to an integrated luminosity of 468 pb−1. The decay modes analysed were μ+μ− and J/ψ(1S)π+π− for the ψ(2S) and μ+μ− for the J/ψ(1S). The cross-section ratio σψ(2S)/σJ/ψ(1S) has been measured as a function of Q2,W and t. The results are compared to predictions of QCD-inspired models of exclusive vector-meson production.
