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Another look at anomalous J/Psi suppression in Pb+Pb collisions at P/A = 158 GeV/c

J. Gosset·A. Baldisseri·H. Borel·F. Staley·Y. Terrien
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Abstract

A new data presentation is proposed to consider anomalous $J/Ψ$ suppression in Pb + Pb collisions at $P/A=158$ GeV/c. If the inclusive differential cross section with respect to a centrality variable is available, one can plot the yield of J/Psi events per Pb-Pb collision as a function of an estimated squared impact parameter. Both quantities are raw experimental data and have a clear physical meaning. As compared to the usual J/Psi over Drell-Yan ratio, there is a huge gain in statistical accuracy. This presentation could be applied advantageously to many processes in the field of nucleus-nucleus collisions at various energies.

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J. Gosset, A. Baldisseri, H. Borel, F. Staley, Y. Terrien. 2000-02-11. Another look at anomalous J/Psi suppression in Pb+Pb collisions at P/A = 158 GeV/c. https://doi.org/10.1007/s100520000261

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