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We present a measurement of the inelastic, non diffractive J/psi photoproduction cross section in the reaction e(+)p --> e(+)J/psi X with the ZEUS detector at HERA, The J/psi was identified using both the mu(+)mu(-) and e(+)e(-) decay channels and events were selected within the range 0.4 < z < 0.9 (0.5 < z < 0.9) for the muon (electron) decay mode, where z is the fraction of the photon energy carried by the J/psi in the proton rest frame. The cross section, the p(T)(2) and the z distributions, after having subtracted the contributions from resolved photon and diffractive proton dissociative processes, are given for the photon-proton centre of mass energy range 50 < W < 180 GeV; p(T)(2) is the square of the J/psi transverse momentum with respect to the incoming proton beam direction. In the kinematic range 0.4 < z < 0.9 and p(T)2 > 1 GeV(2), NLO calculations of the photon-gluon fusion process based on the colour-singlet model are in good agreement with the data, The predictions of a specific leading order colour-octet. model, as formulated to describe the CDP data on J/psi hadroproduction, are not consistent with the data. RI De Pasquale, Salvatore/B-9165-2008; Lancaster, Mark/C-1693-2008; Bashkirov, Vladimir/A-4818-2008; Doyle, Anthony/C-5889-2009; Gladilin, Leonid/B-5226-2011; Golubkov, Yury/E-1643-2012

We present a measurement of the inelastic, non diffractive J/psi photoproduction cross section in the reaction e(+)p --> e(+)J/psi X with the ZEUS detector at HERA, The J/psi was identified using both the mu(+)mu(-) and e(+)e(-) decay channels and events were selected within the range 0.4 < z < 0.9 (0.5 < z < 0.9) for the muon (electron) decay mode, where z is the fraction of the photon energy carried by the J/psi in the proton rest frame. The cross section, the p(T)(2) and the z distributions, after having subtracted the contributions from resolved photon and diffractive proton dissociative processes, are given for the photon-proton centre of mass energy range 50 < W < 180 GeV; p(T)(2) is the square of the J/psi transverse momentum with respect to the incoming proton beam direction. In the kinematic range 0.4 < z < 0.9 and p(T)2 > 1 GeV(2), NLO calculations of the photon-gluon fusion process based on the colour-singlet model are in good agreement with the data, The predictions of a specific leading order colour-octet. model, as formulated to describe the CDP data on J/psi hadroproduction, are not consistent with the data.

Measurement of inelastic J/psi photoproduction at HERA / Breitweg, J; Derrick, M; Krakauer, D; Magill, S; Mikunas, D; Musgrave, B; Repond, J; Stanek, R; Talaga, Rl; Yoshida, R; Zhang, H; Mattingly, Mck; Anselmo, F; Antonioli, P; Bari, G; Basile, M; Bellagamba, L; Boscherini, D; Bruni, A; Bruni, G; Romeo, Gc; Castellini, G; Cifarelli, L; Cindolo, F; Contin, A; Corradi, M; De Pasquale, S; Gialas, I; Giusti, P; Iacobucci, G; Laurenti, G; Levi, G; Margotti, A; Massam, T; Nania, R; Palmonari, F; Pesci, A; Polini, A; Ricci, F; Sartorelli, G; Garcia, Yz; Zichichi, A; Amelung, C; Bornheim, A; Brock, I; Coboken, K; Crittenden, J; Deffner, R; Eckert, M; Grothe, M; Hartmann, H; Heinloth, K; Heinz, L; Hilger, E; Jakob, Hp; Katz, Uf; Kerger, R; Paul, E; Pfeiffer, M; Rembser, C; Stamm, J; Wedemeyer, R; Wieber, H; Bailey, Ds; Campbell Robson, S; Cottingham, Wn; Foster, B; Hall Wilton, R; Hayes, Me; Heath, Gp; Heath, Hf; Piccioni, D; Roff, Dg; Tapper, Rj; Ameodo, M; Ayad, R; Capua, Marcella; Garfagnini, A; Iannotti, L; Schioppa, M; Susinno, G; Kim, Jy; Lee, Jh; Lim, It; Pac, My; Caldwell, A; Cartiglia, N; Jing, Z; Liu, W; Mellado, B; Parsons, Ja; Ritz, S; Sampson, S; Sciulli, F; Straub, Pb; Zhu, Q; Borzemski, P; Chwastowski, J; Eskreys, A; Jakubowski, Z; Przybycien, Mb; Zachara, M; Zawiejski, L; Adamczyk, L; Bednarek, B; Bukowy, M; Jelen, K; Kisielewska, D; Kowalski, T; Przybycien, M; Rulikowska Zarebska, E; Suszycki, L; Zajac, J; Dulinski, Z; Kotanski, A; Abbiendi, G; Bauerdick, Lat; Behrens, U; Beier, H; Bienlein, Jk; Cases, G; Deppe, O; Desler, K; Drews, G; Fricke, U; Gilkinson, Dj; Glasman, C; Gottlicher, P; Grosse Knetter, J; Haas, T; Hain, W; Hasell, D; Johnson, Kf; Kasemann, M; Koch, W; Kotz, U; Kowalski, H; Labs, J; Lindemann, L; Lohr, B; Lowe, M; Manczak, O; Milewski, J; Monteiro, T; Ng, Jst; Notz, D; Ohrenberg, K; Park, Ih; Pellegrino, A; Pelucchi, F; Piotrzkowski, K; Roco, M; Rohde, M; Roldan, J; Ryan, Jj; Savin, Aa; Schneekloth, U; Selonke, F; Surrow, B; Tassi, Enrico; Voss, T; Westphal, D; Wolf, G; Wollmer, U; Youngman, C; Zarnecki, Af; Zeuner, W; Burow, Bd; Grabosch, Hj; Meyer, A; Schlenstedt, S; Barbagli, G; Gallo, E; Pelfer, P; Maccarrone, G; Votano, L; Bamberger, A; Eisenhardt, S; Markun, P; Trefzger, T; Wolfle, S; Bromley, Jt; Brook, Nh; Bussey, Pj; Doyle, At; Saxon, Dh; Sinclair, Le; Strickland, E; Utley, Ml; Waugh, R; Wilson, As; Bohnet, I; Gendner, N; Holm, U; Meyer Larsen, A; Salehi, H; Wick, K; Gladilin, Lk; Horstmann, D; Kcira, D; Klanner, R; Lohrmann, E; Poelz, G; Schott, W; Zetsche, F; Bacon, Tc; Butterworth, Tcbi; Cole, Je; Harris, Vl; Howell, G; Hung, Bhy; Lamberti, L; Long, Kr; Miller, Db; Pavel, N; Prinias, A; Sedgbeer, Jk; Sideris, D; Whitfield, Af; Mallik, U; Wang, Sm; Wu, Jt; Cloth, P; Filges, D; Fleck, Ji; Ishii, T; Kuze, M; Nakao, M; Tokushuku, K; Yamada, S; Yamazaki, Y; An, Sh; Lee, Sb; Nam, Sw; Park, Hs; Park, Sk; Barreiro, F; Fernandez, Jp; Garcia, G; Graciani, R; Hernandez, Jm; Hervas, L; Labarga, L; Martinez, M; del Peso, J; Puga, J; Terron, J; de Troconiz, Jf; Corriveau, F; Hanna, Ds; Hartmann, J; Hung, Lw; Lim, Jn; Murray, Wn; Ochs, A; Riveline, M; Stairs, Dg; St Laurent, M; Ullmann, R; Tsurugai, T; Bashkirov, V; Dolgoshein, Ba; Stifutkin, A; Bashindzhagyan, Gl; Ermolov, Pf; Golubkov, Ya; Khein, La; Korotkova, Na; Korzhavina, Ia; Kuzmin, Va; Lukina, Oy; Proskuryakov, As; Shcheglova, Lm; Solomin, An; Zotkin, Sa; Bokel, C; Botje, M; Brummer, N; Chlebana, F; Engelen, J; Kooijman, P; van Sighem, A; Tiecke, H; Tuning, N; Verkerke, W; Vossebeld, J; Vreeswijk, M; Wiggers, L; de Wolf, E; Acosta, D; Bylsma, B; Durkin, Ls; Gilmore, J; Ginsburg, Cm; Kim, Cl; Ling, Ty; Nylander, P; Romanowski, Ta; Blaikley, He; Cashmore, Rj; Cooper Sarkar, Am; Devenish, Rce; Edmonds, Jk; Harnew, N; Lancaster, M; Mcfall, Jd; Nath, C; Noyes, Va; Quadt, A; Ruske, O; Tickner, Jr; Uijterwaal, H; Walczak, R; Waters, Ds; Bertolin, A; Brugnera, R; Carlin, R; Dal Corso, F; De Giorgi, M; Dosselli, U; Limentani, S; Morandin, M; Posocco, M; Stanco, L; Stroili, R; Voci, C; Zuin, F; Bulmahn, J; Feild, Rg; Oh, By; Okrasinski, Jr; Whitmore, Jj; Iga, Y; D'Agostini, G; Marini, G; Nigro, A; Raso, M; Hart, Jc; Mccubbin, Na; Shah, Tp; Epperson, D; Heusch, C; Rahn, Jt; Sadrozinski, Hfw; Seiden, A; Williams, Dc; Schwarzer, O; Walenta, Ah; Abramowicz, H; Briskin, G; Dagan, S; Kananov, S; Levy, A; Abe, T; Fusayasu, T; Inuzuka, M; Nagano, K; Suzuki, I; Umemori, K; Yamashita, T; Hamatsu, R; Hirose, T; Homma, K; Kitamura, S; Matsushita, T; Yamauchi, K; Cirio, R; Costa, M; Ferrero, Mi; Maselli, S; Monaco, V; Peroni, C; Petrucci, Mc; Sacchi, R; Solano, A; Stiano, A; Dardo, M; Bailey, Dc; Brkic, M; Fagerstroem, Cp; Hartner, Gf; Joo, Kk; Levman, Gm; Martin, Jf; Orr, Rs; Polenz, S; Sampson, Cr; Simmons, D; Teuscher, Rj; Butterworth, Jm; Catterall, Cd; Jones, Tw; Kaziewicz, Pb; Lane, Jb; Saunders, Rl; Shulman, J; Sutton, Mr; Lu, B; Mo, Lw; Ciborowski, J; Grzelak, G; Kasprzak, M; Muchorowski, K; Nowak, Rj; Pawlak, Jm; Pawlak, R; Tymieniecka, T; Wroblewski, Ak; Zakrzewski, Ja; Adamus, M; Coldewey, C; Eisenberg, Y; Hochman, D; Karshon, U; Revel, D; Badgett, Wf; Chapin, D; Cross, R; Dasu, S; Foudas, C; Loveless, Rj; Mattingly, S; Reeder, Dd; Smith, Wh; Vaiciulis, A; Wodarczyk, M; Bhadra, S; Frisken, Wr; Khakzad, M; Schmidke, Wb; Capua, M; Schioppa, Marco; Tassi, E. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 76:4(1997), pp. 599-612.

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