Regular Article – Experimental Physics
J/ψ production in PHENIX
Laboratoire Leprince-Ringuet, École polytechnique/IN2P3, 91128, Palaiseau, France
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Published online: 16 November 2006
Heavy quarkonia production is expected to be sensitive to the formation of a quark gluon plasma (QGP). The PHENIX experiment has measured J/ψ production at =200 GeV in Au+Au and Cu+Cu collisions, as well as in reference p+p and d+Au runs. J/ψ’s were measured both at mid (|y|<0.35) and forward (1.2<|y|<2.2) rapidity. In this letter, we present the A+A preliminary results and compare them to normal cold nuclear matter expectations derived from PHENIX d+Au and p+p measurements as well as to theoretical models including various effects (color screening, recombination, sequential melting...).
© Springer-Verlag Berlin Heidelberg, 2007