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$J/ψ$ production in Au+Au collisions at RHIC and the nuclear absorption

A. K. Chaudhuri
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Abstract

It is shown that a QCD based nuclear absorption model, with few parameters fixed to reproduce experimental $J/ψ$ yield in 200 GeV pp/pA and 450 GeV pA collisions can explain the preliminary PHENIX data on the centrality dependence of $J/ψ$ suppression in Cu+Cu collisions at RHIC energy, $\sqrt{s_{NN}}$=200 GeV. However, the model does not give satisfactory description to the preliminary PHENIX data on the centrality dependence of $J/ψ$ suppression in Au+Au collisions. The analysis suggest that in Au+Au collisions, $J/ψ$ are suppressed in a medium unlike the medium produced in SPS energy nuclear collisions or in RHIC energy Cu+Cu collisions.

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A. K. Chaudhuri. 2006-11-09. $J/ψ$ production in Au+Au collisions at RHIC and the nuclear absorption. https://doi.org/10.1103/physrevc.74.044907

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