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Evidence for Statistical Production of J/psi Mesons in Nuclear Collisions at 158--200 A GeV

Marek Gazdzicki, Mark I. Gorenstein

hep-pharXiv:hep-ph/9905515

Abstract

The hypothesis of statistical production of J/psi mesons at hadronization is formulated and checked against experimental data. It explains in the natural way the observed scaling behavior of the J/psi to pion ratio at the CERN SPS energies. Using the multiplicities of J/psi and eta mesons the hadronization temperature TH = 175 MeV is found, which agrees with the previous estimates of the temperature parameter based on the analysis of the hadron yield systematics.

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