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Sequential charmonium dissociation

F. Karsch, D. Kharzeev, H. Satz

hep-pharXiv:hep-ph/0512239

Abstract

Finite temperature lattice QCD indicates that the charmonium ground state J/psi can survive in a quark-gluon plasma up to 1.5 Tc or more, while the excited states chic and psi-prime are dissociated just above Tc. We assume that the chic suffers the same form of suppression as that observed for the psi-prime in SPS experiments, and that the directly produced J/psi is unaffected at presently available energy densities. This provides a parameter-free description of J/psi and psi-prime suppression which agrees quite well with that observed in SPS and RHIC data.

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