Colour-Octet Contributions to J/psi Production via Fragmentation at HERA
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We study J/psi photoproduction via fragmentation at next-to-leading order in the QCD-improved parton model, using the nonrelativistic factorization formalism proposed by Bodwin, Braaten, and Lepage. We predict that measurements of J/psi photoproduction at DESY HERA should show a distinctive excess over the expectation based on the colour-singlet model at small values of the inelasticity variable z.
Keywords
Cite
@article{arxiv.hep-ph/9711443,
title = {Colour-Octet Contributions to J/psi Production via Fragmentation at HERA},
author = {Bernd A. Kniehl},
journal= {arXiv preprint arXiv:hep-ph/9711443},
year = {2007}
}
Comments
3 pages (Latex), 2 figures (Postscript), to appear in the Proceedings of the International Europhysics Conference on High Energy Physics, Jerusalem, Israel, 19 - 26 August 1997