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The onset of the anomalous J/psi suppression in Pb-Pb collisions at the CERN SPS

Roberta Arnaldi
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Abstract

The J/psi suppression observed by the NA50 experiment is one of the most striking signatures for quark gluon plasma formation in Pb-Pb collisions at 158 AGeV. The J/psi production has been studied as a function of the centrality of the collision estimated via the forward energy EZDC released in a zero degree calorimeter (ZDC). The study of the correlation between the number of participant nucleons in the collisions, Npart, and EZDC allows to check whether the J/psi suppression pattern vs. EZDC is compatible with a sudden J/psi suppression mechanism expressed as a function of Npart.

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Roberta Arnaldi. 2001-06-20. The onset of the anomalous J/psi suppression in Pb-Pb collisions at the CERN SPS. https://arxiv.org/abs/hep-ex/0106079

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