Measurements of inelastic J/psi and psi'photoproduction at HERA
- Chekanov, S.
- Krakauer, D.
- Magill, S.
- Musgrave, B.
- Repond, J.
- Yoshida, R.
- Mattingly, M.C.K.
- Antonioli, P.
- Bari, G.
- Basile, M.
- Bellagamba, L.
- Boscherini, D.
- Bruni, A.
- Bruni, G.
- Romeo, G.C.
- Cifarelli, L.
- Cindolo, F.
- Contin, A.
- Corradi, M.
- de Pasquale, S.
- Giusti, P.
- Iacobucci, G.
- Margotti, A.
- Nania, R.
- Palmonari, F.
- Pesci, A.
- Sartorelli, G.
- Zichichi, A.
- Aghuzumtsyan, G.
- Bartsch, D.
- Brock, I.
- Goers, S.
- Hartmann, H.
- Hilger, E.
- Irrgang, P.
- Jakob, H.P.
- Kappes, A.
- Katz, U.F.
- Kind, O.
- Paul, E.
- Rautenberg, J.
- Renner, R.
- Schnurbusch, H.
- Stifutkin, A.
- Tandler, J.
- Voss, K.C.
- Wang, M.
- Weber, A.
- Bailey, D.S.
- Brook, N.H.
- Cole, J.E.
- Foster, B.
- Heath, G.P.
- Heath, H.F.
- Robins, S.
- Rodrigues, E.
- Scott, J.
- Tapper, R.J.
- Wing, M.
- Capua, M.
- Mastroberardino, A.
- Schioppa, M.
- Susinno, G.
- Kim, J.Y.
- Kim, Y.K.
- Lee, J.H.
- Lim, I.T.
- Pac, M.Y.
- Caldwell, A.
- Helbich, M.
- Liu, X.
- Mellado, B.
- Ning, Y.
- Paganis, S.
- Ren, Z.
- Schmidke, W.B.
- Sciulli, F.
- Chwastowski, J.
- Eskreys, A.
- Figiel, J.
- Olkiewicz, K.
- Stopa, P.
- Zawiejski, L.
- Adamczyk, L.
- Bold, T.
- Grabowska-Bold, I.
- Kisielewska, D.
- Kowal, A.M.
- Kowal, M.
- Kowalski, T.
- Przybycien, M.
- Suszycki, L.
- Szuba, D.
- Szuba, J.
- Kotasnski, A.
- Slominski, W.
- Bauerdick, L.A.T.
- Behrens, U.
- Bloch, I.
- Borras, K.
- Chiochia, V.
- Dannheim, D.
- Derrick, M.
- Drews, G.
- Fourletova, J.
- Fox-Murphy, A.
- Fricke, U.
- Geiser, A.
- Goebel, F.
- Gottlicher, P.
- Gutsche, O.
- Haas, T.
- Hain, W.
- Hartner, G.F.
- Hillert, S.
- Kotz, U.
- Kowalski, H.
- Kramberger, G.
- Labes, H.
- Lelas, D.
- Lohr, B.
- Mankel, R.
- Melzer-Pellmann, I.A.
- Moritz, M.
- Notz, D.
- Petrucci, M.C.
- Polini, A.
- Raval, A.
- Schneekloth, U.
- Selonke, F.
- Wessoleck, H.
- Wichmann, R.
- Wolf, G.
- Youngman, C.
- Zeuner, W.
- Viani, A.L.D.
- Meyer, A.
- Schlenstedt, S.
- Barbagli, G.
- Gallo, E.
- Genta, C.
- Pelfer, P.G.
- Bamberger, A.
- Benen, A.
- Coppola, N.
- Bell, M.
- Bussey, P.J.
- Doyle, A.T.
- Glasman, C.
- Hanlon, S.
- Lee, S.W.
- Lupi, A.
- McCance, G.J.
- Saxon, D.H.
- Skillicorn, I.O.
- Gialas, I.
- Bodmann, B.
- Carli, T.
- Holm, U.
- Klimek, K.
- Krumnack, N.
- Lohrmann, E.
- Milite, M.
- Salehi, H.
- Stonjek, S.
- Wick, K.
- Ziegler, A.
- Ziegler, A.
- Collins-Tooth, C.
- Foudas, C.
- Goncalo, R.
- Long, K.R.
- Metlica, F.
- Tapper, A.D.
- Cloth, P.
- Filges, D.
- Kuze, M.
- Nagano, K.
- Tokushuku, K.
- Yamada, S.
- Yamazaki, Y.
- Barakbaev, A.N.
- Boos, E.G.
- Pokrovskiy, N.S.
- Zhautykov, B.O.
- Lim, H.
- Son, D.
- Barreiro, F.
- Gonzalez, O.
- Labarga, L.
- del Peso, J.
- Redondo, I.
- Tassi, E.
- Terron, J.
- Vazquez, M.
- Barbi, M.
- Bertolin, A.
- Corriveau, F.
- Ochs, A.
- Padhi, S.
- Stairs, D.G.
- St Laurent, M.
- Tsurugai, T.
- Antonov, A.
- Danilov, P.
- Dolgoshein, B.A.
- Gladkov, D.
- Sosnovtsev, V.
- Suchkov, S.
- Dementiev, R.K.
- Ermolov, P.F.
- Golubkov, Y.A.
- Katkov, I.I.
- Khein, L.A.
- Korzhavina, I.A.
- Kuzmin, V.A.
- Levchenko, B.B.
- Lukina, O.Y.
- Proskuryakov, A.S.
- Shcheglova, L.M.
- Vlasov, N.N.
- Zotkin, S.A.
- Bokel, C.
- Engelen, J.
- Grijpink, S.
- Koffeman, E.
- Kooijman, P.
- Maddox, E.
- Pellegrino, A.
- Schagen, S.
- Tiecke, H.
- Tuning, N.
- Velthuis, J.J.
- Wiggers, L.
- de Wolf, E.
- Brummer, N.
- Bylsma, B.
- Durkin, L.S.
- Ling, T.Y.
- Boogert, S.
- Cooper-Sarkar, A.M.
- Devenish, R.C.E.
- Ferrando, J.
- Grzelak, G.
- Matsushita, T.
- Rigby, M.
- Ruske, O.
- Sutton, M.R.
- Walczak, R.
- Brugnera, R.
- Carlin, R.
- Dal Corso, F.
- Dusini, S.
- Garfagnini, A.
- Limentani, S.
DOIAbstract
The cross sections for inelastic photoproduction of J/psi and psi' mesons have been measured in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 38.0 pb(- 1). The events were required to have 0.1 lt z lt 0.9 and 50 lt W lt 180 GeV, where z is the fraction of the incident photon energy carried by the J/psi in the proton rest frame and W is the photon-proton centre-of-mass energy. The psi' to J/psi cross- section ratio was measured in the range 0.55 lt z lt 0.9. The J/psi data, for various ranges of transverse momentum, are compared to theoretical models incorporating colour-singlet and colour-octet matrix elements. Predictions of a next-to-leading- order colour-singlet model give a good description ...
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