2002/12/11 by A. K. Chaudhuri, Chaudhuri, A. K.
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/0212046
8 pages, 8 figures. In the revised version, latest NA50 data (2000 run) on the centrality dependence of $J/ψ$ over Drell-Yan ratio are analysed in the QCD based nuclear absorption model and in the QGP based threshold model. In addition NA50 data on the centrality dependence of $J/ψ$ over minimum bias ratio and $p_T$ broadening of $J/ψ$'s are analysed. Prediction for RHIC Au+Au collisions are given
openalex publication_date 2002/12/11 · arxiv created 2005/06/24 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We have analyzed the latest NA50 data on J/ψ suppression in Pb+Pb collisions at CERN SPS. It is shown that a QCD based nuclear absorption model, where J/ψ's are absorbed in nuclear medium could explain the latest NA50 data on the centrality dependence of the J/ψ over Drell-Yan ratio. The model also explains the NA50 data on J/ψ over minimum bias ratio and the pT broadening of J/ψ's. A QGP based threshold model where all the J/ψ's are suppressed above a threshold density, also explains the data sets with smeared threshold density. Even at RHIC energy, centrality dependence of J/ψ suppression or pT broadening could not distinguish between the two models.