The NA60 experiment at CERN SPS has performed a study of J/Psi production in p-A collisions at 158 GeV incident energy. For the first time it has been possible to study cold-nuclear matter effects at the same energy as In-In and Pb-Pb collisions, where an "anomalous J/Psi suppression" had been observed. We present preliminary results on the J/Psi absorption cross section at 158 GeV and compare them with a "reference measurement" taken with the same apparatus at 400 GeV and with other results available in the literature.
NA60 results on Quarkonia
CORTESE, Pietro;
2008-01-01
Abstract
The NA60 experiment at CERN SPS has performed a study of J/Psi production in p-A collisions at 158 GeV incident energy. For the first time it has been possible to study cold-nuclear matter effects at the same energy as In-In and Pb-Pb collisions, where an "anomalous J/Psi suppression" had been observed. We present preliminary results on the J/Psi absorption cross section at 158 GeV and compare them with a "reference measurement" taken with the same apparatus at 400 GeV and with other results available in the literature.File in questo prodotto:
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