Charmonium dynamics in heavy ion collisions

Details Charmonium dynamics in heavy ion collisions Charmonium dynamics in heavy ion collisions

2007-10-08

arxiv.org/abs/0710.1535v1

J.Phys.G35:044037,2008

Physics

Nuclear Physics

Nuclear Theory

6 pages, 2 figures, talk presented at the international conference on "Strangeness in Quark Matter", 24-29 June 2007, Levoca,

Scientific paper

10.1088/0954-3899/35/4/044037

Applying the HSD transport approach to charmonium dynamics within the 'hadronic comover model' and the 'QGP melting scenario', we show that the suppression pattern seen at RHIC cannot be explained by the interaction with baryons, comoving mesons and/or by color screening mechanism. The interaction with hadrons in the late stages of the collision (when the energy density falls below the critical) gives a sizable contribution to the suppression. On the other hand, it does not account for the observed additional charmonium dissociation and its dependence on rapidity. Together with the failure of the hadron-string models to reproduce high v2 of open charm mesons, this suggests strong pre-hadronic interaction of c-cbar with the medium at high energy densities.

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