, 2010:85,
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Date: 25 May 2010

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

Abstract

The proton-dissociative diffractive photoproduction of J/ψ 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.

ArXiv ePrint: 0910.1235
Deceased. (P. F. Ermolov)