Two-component approach to J/ψ production in high-energy heavy-ion collisions

2002/09/18 by L. Grandchamp, Ralf Rapp, R. Rapp · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1016/s0375-9474(02)01512-9

published as Nucl.Phys. A715 (2003) 545-548 · 4 pages (incl. 4 postscript figures); v2: Typos corrected; uses espcrc1.sty. Talk given at Quark Matter 2002, Nantes, July 18-24, 2002, to appear in the proceedings in Nucl. Phys. A

arxiv created 2002/09/18 · openalex publication_date 2003/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The production of charmonia in ultrarelativistic heavy-ion collisions is investigated including two sources. These are a primordial contribution coupled with various phases of dissociation, and a statistical coalescence of c and c quarks at the hadronization phase transition. Within a schematic fireball evolution, SPS data on J/Ψ production can be reasonably well reproduced. Remaining discrepancies in the Ψ'/Ψ ratio are discussed. Predictions for the J/Ψ centrality dependence at RHIC energies are confronted with first data from PHENIX. The pertinent excitation function of the N_J/Ψ/N_cc ratio exhibits a characteristic minimum structure signaling the transition from the standard J/Ψ suppression scenario (SPS) to predominantly statistical production (RHIC).

Citations

• (Non)thermal aspects of charmonium production and a new look at J/ψ suppression

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