Prompt J/psi plus photon associated electroproduction at DESY HERA

Details Prompt J/psi plus photon associated electroproduction at DESY HERA Prompt J/psi plus photon associated electroproduction at DESY HERA

2006-08-22

arxiv.org/abs/hep-ph/0608245v1

Eur.Phys.J.C48:451-456,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure, to appear in Eur. Phys. J. C

Scientific paper

10.1140/epjc/s10052-006-0044-2

We study the production of a prompt J/psi meson in association with a prompt photon in ep deep-inelastic scattering within the factorisation formalism of non-relativistic quantum chromodynamics (NRQCD) and demonstrate that this process provides a clean probe of the colour-octet mechanism at DESY HERA. Our analysis is based on an updated set of non-perturbative NRQCD matrix elements obtained through a joint fit to data on charmonium inclusive hadroproduction from runs I and II at the Fermilab Tevatron.

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