Nuclear absorption and anomalous J/ψ suppression in Pb+Pb collisions
A. K. Chaudhuri
Abstract
We discuss J/ψ suppression in a QCD based nuclear absorption model. Centrality dependence of J/ψ suppression in S+U and in Pb+Pb collisions are explained in the model. However, the model fails to explain the centrality dependence of ψ suppression. ψ suppression in S+U or in Pb+Pb collisions require additional suppression. Additional suppression of ψ, due to hadronic comovers or due to QGP formation could not be distinguished in Pb+Pb collisions. We then show that the centrality dependence of the ratio, ψ over J/ψ, could possibly distinguish two scenario (e.g. QGP or hadronic comover) at RHIC energy.
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