# J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon

Abstract : The NA60 experiment has studied J/$\psi$ production in Indium-Indium collisions at 158 A$\cdot$GeV. In this paper we present an updated set of results obtained with the complete set of available statistics and an improved alignment of the vertex tracker. The centrality dependence of the J/$\psi$ production, obtained with an analysis technique based only on the J/$\psi$ sample, indicates that a suppression beyond that induced by nuclear absorption is present in In-In collisions, setting in at $\sim$80 participant nucleons. A first study of the systematic errors related with this measurement is discussed. We also present preliminary results on the J/$\psi$ azimuthal distributions.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00131883
Contributor : Sylvie Flores <>
Submitted on : Monday, February 19, 2007 - 4:17:37 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:09 PM

### Citation

R. Arnaldi, R. Averbeck, K. Banicz, J. Castor, B. Chaurand, et al.. J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon. 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions - Hard Probes 2006, Jun 2006, Pacific Grove, United States. pp.261-268, ⟨10.1016/j.nuclphysa.2006.11.081⟩. ⟨in2p3-00131883⟩

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