2002/01/31 by Bin Zhang, Che Ming Ko, C. M. Ko +3 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.65.054909
published as Phys.Rev. C65 (2002) 054909 · Figures redone with better statistics
arxiv created 2002/03/09 · openalex publication_date 2002/05/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
Using a multiphase transport model, we study J/\ensuremathψ production from interactions between charm and anticharm quarks in the initial parton phase and between D and D mesons in the final hadron phase of relativistic heavy ion collisions at the relativistic heavy ion collider. Including also the inverse reactions of J/\ensuremathψ absorption by gluons and light mesons, we find that the net number of J/\ensuremathψ from the parton and hadron phases is smaller than that expected from the superposition of initial nucleon-nucleon collisions, contrary to the J/\ensuremathψ enhancement predicted by the kinetic formation model. The production of J/\ensuremathψ is further suppressed if one includes the color screening effect in the parton phase. We have also studied the dependence of J/\ensuremathψ production on the charm quark mass and the effective charm meson mass.