Time structure of anomalous J/ψ and ψ′ suppression in nuclear collisions

2002/08/31 by J. Hüfner, Joerg Huefner, Pengfei Zhuang · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1016/s0370-2693(03)00347-2

published as Phys.Lett.B559:193-200,2003 · 11 pages, 4 figures

arxiv created 2003/02/08 · openalex publication_date 2003/04/23 · arxiv updated 2014/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The data for the mean squared transverse momentum P_t as function of transverse energy E_t of J/Psi and Psi' produced in Pb-Pb collisions at the CERN-SPS are analyzed and it is claimed that they contain information about the time structure of anomalous suppression. A transport equation which describes transverse motion of J/Psi and Psi' in the absorptive medium is proposed and solved for a QGP and a comover scenario of suppression. While the comover approach accounts for the data fairly well without adjusting any parameter, the fit to the data within the QGP scenario requires to assume anomalous suppression to become effective rather late, 3-4 fm/c after the nuclear overlap.

Citations

• Charmonium suppression in lead-lead collisions: Is there a break in theJ/ψcross section?
• Evidence for deconfinement of quarks and gluons from the J/ψ suppression pattern measured in Pb-Pb collisions at the CERN-SPS

Cited by

• Medium effects on charmonium production at ultrarelativistic energies available at the CERN Large Hadron Collider