Modeling [Formula Presented] production and absorption in a microscopic nonequilibrium approach

Published

Journal Article

Charmonium production and absorption in heavy ion collisions is studied with the ultrarelativisitic quantum molecular dynamics model. We compare the scenario of universal and time-independent color-octet dissociation cross sections with one of distinct color-singlet [Formula Presented], and [Formula Presented] states, evolving from small, color transparent configurations to their asymptotic sizes. Both purely hadronic scenarios are compared with the [Formula Presented] and [Formula Presented] data at SPS energies. The predicted rapidity dependence of [Formula Presented] suppression can be used to discriminate between the two scenarios experimentally. The importance of interactions with secondary hadrons and the applicability of thermal reaction kinetics to [Formula Presented] absorption are investigated. We discuss the effect of nuclear stopping and the role of leading hadrons. The dependence of the [Formula Presented] ratio on the model assumptions and the possible influence of refeeding processes are also studied. © 1999 The American Physical Society.

Full Text

Duke Authors

Cited Authors

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

Published Date

  • January 1, 1999

Published In

Volume / Issue

  • 60 / 5

Start / End Page

  • 15 -

Electronic International Standard Serial Number (EISSN)

  • 1089-490X

International Standard Serial Number (ISSN)

  • 0556-2813

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.60.054901

Citation Source

  • Scopus