Dissociation rates of J/psi's with comoving mesons - thermal vs. nonequilibrium scenario

Abstract

We study J/psi dissociation processes in hadronic environments. The validity of a thermal meson gas ansatz is tested by confronting it with an alternative, nonequilibrium scenario. Heavy ion collisions are simulated in the framework of the microscopic transport model UrQMD, taking into account the production of charmonium states through hard parton-parton interactions and subsequent rescattering with hadrons. The thermal gas and microscopic transport scenarios are shown to be very dissimilar. Estimates of J/psi survival probabilities based on thermal models of comover interactions in heavy ion collisions are therefore not reliable.

arXiv comment12 pages, 6 figures

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Cited by in corpus (9)

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• Open charm and charmonium production at relativistic energies
• J/psi transport in QGP and Pt distribution at SPS and RHIC
• Charmonium dynamics in nucleus-nucleus collisions at SPS and FAIR energies
• Charmonium chemistry in A+A collisions at relativistic energies
• Charmonium dynamics in Au+Au collisions at sqrt(S)=200 GeV
• Possibility for $J/\Psi$ suppression in high multiplicity proton-proton collisions at $\sqrt{s_{NN}}=7$TeV
• Dynamics of strange, charm and high momentum hadrons in relativistic nucleus-nucleus collisions
• Charmonium dynamics in heavy ion collisions