$J/Ψ$ suppression at SPS, RHIC and LHC energies and the percolation of strings

Details $J/Ψ$ suppression at SPS, RHIC and LHC energies and the percolation of strings $J/Ψ$ suppression at SPS, RHIC and LHC energies and the percolation of strings

2001-07-31

arxiv.org/abs/hep-ph/0107319v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, revtex, 3 postscript figures

Scientific paper

We study the enhancement of $c \bar c$ pair production that takes place in central heavy ion collisions due to the formation of clusters of strings. These clusters produce heavy flavors more efficiently due to their higher color. We discuss the competition between this mechanism and the well-known screening of color charge, which, above a critical string density, reduces strongly the probability of binding these $c \bar c$ pairs to form $J/\Psi$ particles. The dependence of $J/\Psi$ suppression on the centrality shows a peak at both RHIC and LHC energies corresponding to the percolation critical density.

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