arXiv:hep-ph/0112199·v1·High Energy Physics — Phenomenology
J/psi Inclusive Production in ep Deep-Inelastic Scattering at DESY HERA
Bernd A. Kniehl🇩🇪 · Lennart Zwirner (Hamburg U.)🇩🇪
Abstract
We calculate the cross section of J/psi plus jet associated production in ep deep-inelastic scattering within the factorization formalism of nonrelativistic quantum chromodynamics. Our analytic results disagree with previous analyses, both for the colour-singlet and colour-octet channels. Our theoretical predictions agree reasonably well with recent data taken by the H1 Collaboration at DESY HERA, significantly better than those obtained within the colour-singlet model.
Comments: 27 pages (Latex), 9 figures (Postscript), to appear in Nucl. Phys. B