Dissociation of J/ψ by mesons: Thermal versus nonequilibrium scenario


Journal Article

We study J/ψ reaction kinetics 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, the ultrarelativistic quantum molecular dynamics model, taking into account the production of charmonium states through hard parton-parton interactions and subsequent rescattering with secondary hadrons assuming constant dissociation cross sections. The thermal gas and microscopic transport scenarios are shown to be very dissimilar. Estimates of J/ψ survival probabilities based on thermal models of co-mover interactions in heavy-ion collisions are therefore questionable.

Full Text

Duke Authors

Cited Authors

  • Spieles, C; Vogt, R; Gerland, L; Bass, SA; Bleicher, M; Stöcker, H; Greiner, W

Published Date

  • December 1, 1999

Published In

Volume / Issue

  • 25 / 12

Start / End Page

  • 2351 - 2359

International Standard Serial Number (ISSN)

  • 0954-3899

Digital Object Identifier (DOI)

  • 10.1088/0954-3899/25/12/305

Citation Source

  • Scopus