Measurement of J/psi photoproduction at large momentum transfer at HERA
- Chekanov, S.
- Derrick, M.
- Magill, S.
- Musgrave, B.
- Nicholass, D.
- Repond, J.
- Yoshida, R.
- Mattingly, M. C. K.
- Antonioli, P.
- Bari, G.
- Bellagamba, L.
- Boscherini, D.
- Bruni, A.
- Bruni, G.
- Cindolo, F.
- Corradi, M.
- Iacobucci, G.
- Margotti, A.
- Nania, R.
- Polini, A.
- Antonelli, S.
- Basile, M.
- Bindi, M.
- Cifarelli, L.
- Contin, A.
- De Pasquale, S.
- Sartorelli, G.
- Zichichi, A.
- Bartsch, D.
- Brock, I.
- Hartmann, H.
- Hilger, E.
- Jakob, H. -P.
- Juengst, M.
- Nuncio-Quiroz, A. E.
- Samson, U.
- Schoenberg, V.
- Shehzadi, R.
- Wlasenko, M.
- Kaur, M.
- Kaur, P.
- Singh, I.
- Capua, M.
- Fazio, S.
- Mastroberardino, A.
- Schioppa, M.
- Susinno, G.
- Tassi, E.
- Kim, J. Y.
- Pellegrino, A.
DOIAbstract
The proton-dissociative diffractive photoproduction of J/psi mesons has been studied in ep collisions with the ZEUS detector at HERA using an integrated luminosity of 112 pb(-1). The cross section is presented as a function of the photon-proton centre-of-mass energy and of the squared four-momentum transfer at the proton vertex. The results are compared to perturbative QCD calculations.</p
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