# Quarkonium suppression from SPS to RHIC (and from p+A to A+A)

Abstract : Heavy quarkonia production is expected to be sensitive to the formation of a quark gluon plasma (QGP). It was (and still is with ongoing data analyses) extensively studied at the CERN SPS, at collision energy $\sqrt{s_{NN}}$ of the order of 20 GeV. An anomalous suppression was clearly observed. The PHENIX experiment at RHIC has presented preliminary results that exhibit a similar amount of $J/\psi$ suppression, at ten times higher collision energy. I review the results obtained at both facilities. While interpreting and comparing them, the importance of understanding normal nuclear effects is emphasized. A new method to derive a reference for Au+Au collisions from the centrality dependence of d+Au measurements at RHIC is exposed.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00126834
Contributor : Dominique Girod <>
Submitted on : Friday, January 26, 2007 - 11:51:45 AM
Last modification on : Thursday, March 5, 2020 - 6:21:39 PM

### Citation

R. Granier de Cassagnac. Quarkonium suppression from SPS to RHIC (and from p+A to A+A). 2nd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions - Hard Probes 2006, Jun 2006, Pacific Grove, United States. pp.293-300, ⟨10.1016/j.nuclphysa.2006.11.083⟩. ⟨in2p3-00126834⟩

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