J/psi production in relativistic heavy ion collisions from a multiphase transport model
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Date
2002
Authors
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Journal ISSN
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Publisher
American Physical Society
Abstract
Using a multiphase transport model, we study J/psi production from interactions between charm and anticharm quarks in the initial parton phase and between D and (D) over bar mesons in the final hadron phase of relativistic heavy ion collisions at the relativistic heavy ion collider. Including also the inverse reactions of J/psi absorption by gluons and light mesons, we find that the net number of J/psi from the parton and hadron phases is smaller than that expected from the superposition of initial nucleon-nucleon collisions, contrary to the J/psi enhancement predicted by the kinetic formation model. The production of J/psi is further suppressed if one includes the color screening effect in the parton phase. We have also studied the dependence of J/psi production on the charm quark mass and the effective charm meson mass.
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Keywords
QUARK-GLUON PLASMA, NUCLEAR COLLISIONS, CHARMONIUM SUPPRESSION, HADRONIC, MATTER, ENERGY, DISSOCIATION, PARTON, ABSORPTION, PSI', QCD, Physics
Citation
B. Zhang, Che Ming Ko, Ba Li, Z. W. Lin and S. Pal. Phys.Rev.C 65 054909 2002. "Copyright (2002) by the American Physical Society."