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

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

1999-05-27

arxiv.org/abs/hep-ph/9905515v2

Phys.Rev.Lett.83:4009-4012,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

revised version, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.83.4009

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.

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