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arXiv · hep-ph/9809412

On J/psi Production in Nuclear Collisions

Marek Gazdzicki
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Abstract

Data on J/psi production in inelastic proton-proton, proton-nucleus and nucleus-nucleus interactions at 158 A GeV are analyzed and it is shown that the ratio of mean multiplicities of J/psi mesons and pions is the same for all these collisions. This observation is difficult to understand within current models of J/psi production in nuclear collisions based on the assumption of hard QCD creation of charm quarks.

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Marek Gazdzicki. 1998-11-26. On J/psi Production in Nuclear Collisions. https://doi.org/10.1103/physrevc.60.054903

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