On J/psi Production in Nuclear Collisions

Details On J/psi Production in Nuclear Collisions On J/psi Production in Nuclear Collisions

1998-09-16

arxiv.org/abs/hep-ph/9809412v3

Phys.Rev. C60 (1999) 054903

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures, significant changes introduced

Scientific paper

10.1103/PhysRevC.60.054903

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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