Measurement of J/psi photoproduction at large momentum transfer at HERA
classification
✦ hep-ex
keywords
heraphotoproductiontransferbeencalculationscentre-of-masscollisionscompared
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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.
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