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arXiv · 0910.1235

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

ZEUS Collaboration
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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.

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ZEUS Collaboration. 2009-10-07. Measurement of J/psi photoproduction at large momentum transfer at HERA. https://doi.org/10.1007/jhep05(2010)085

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