Measurement of J/psi photoproduction at large momentum transfer at HERA

Abstract

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.

38 pages, 11 figures. In figures 6,9 and 11 added H1 measurement. Added comment on background contribution in subsection Evaluation of background

References in corpus (1)

• Large t diffractive J/ψphotoproduction with proton dissociation in ultraperipheral pA collisions at LHC

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