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arXiv · hep-ph/9908244

Charmonium suppression by gluon bremsstrahlung in p-A and A-B collisions

J. Huefner·Y. B. He·B. Z. Kopeliovich
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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 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 σ(gPsi).

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J. Huefner, Y. B. He, B. Z. Kopeliovich. 1999-08-04. Charmonium suppression by gluon bremsstrahlung in p-A and A-B collisions. https://doi.org/10.1007/s100500050387

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