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

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 T_H = 175 MeV is found, which agrees with the previous estimates of the temperature parameter based on the analysis of the hadron yield systematics.

revised version, to appear in Phys. Rev. Lett

References in corpus (1)

• The parton to hadron phase transition observed in Pb+Pb collisions at 158 GeV per nucleon

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