J/psi production in Indium-Indium collisions at 158 GeV/nucleon
Nuclear Experiment
2007-07-02 v1
Abstract
The NA60 experiment studies muon pair production at the CERN SPS. In this letter we report on a precision measurement of J/psi in In-In collisions. We have studied the J/psi centrality distribution, and we have compared it with the one expected if absorption in cold nuclear matter were the only active suppression mechanism. For collisions involving more than ~80 participant nucleons, we find that an extra suppression is present. This result is in qualitative agreement with previous Pb-Pb measurements by the NA50 experiment, but no theoretical explanation is presently able to coherently describe both results.
Keywords
Cite
@article{arxiv.0706.4361,
title = {J/psi production in Indium-Indium collisions at 158 GeV/nucleon},
author = {NA60 Collaboration and R. Arnaldi},
journal= {arXiv preprint arXiv:0706.4361},
year = {2007}
}
Comments
5 pages, 1 table, 4 figures, accepted for publication by PRL