Charmonium suppression by gluon bremsstrahlung in p-A and A-B collisions
High Energy Physics - Phenomenology
2009-10-31 v1 Nuclear Theory
Abstract
Prompt gluons are an additional source for charmonium suppression in nuclear collisions, in particular for nucleus-nucleus collisions. These gluons are radiated as bremsstrahlung in N-N collisions and interact inelastically with the charmonium states while the nuclei still overlap. The spectra and mean number <n_g> of the prompt gluons are calculated perturbatively and the gluon-Psi inelastic cross section is estimated. The integrated cross sections for AB --> J/Psi (Psi')X for p-A and A-B collisions and the dependence on transverse energy for S-U and Pb-Pb can be described quantitatively with some adjustment of one parameter <n_g>\sigma(gPsi).
Cite
@article{arxiv.hep-ph/9908244,
title = {Charmonium suppression by gluon bremsstrahlung in p-A and A-B collisions},
author = {J. Huefner and Y. B. He and B. Z. Kopeliovich},
journal= {arXiv preprint arXiv:hep-ph/9908244},
year = {2009}
}
Comments
17 pages of Latex including 10 figures