J/psi transport in QGP and Pt distribution at SPS and RHIC

Abstract

Combining the hydrodynamic equations for the QGP evolution and the transport equation for the primordially produced $J/\psi$ in the QGP, we investigate the $J/\psi$ transverse momentum distribution as well as its suppression in the $\sqrt{s}$=17.3A GeV Pb-Pb collisions at SPS and $\sqrt{s}$=200A GeV Au-Au collisions at RHIC. The two sets of equations are connected by the $J/\psi$ anomalous suppression induced by its inelastic scattering with gluons in the QGP. The calculated centrality dependence of $J/\psi$ suppression and average transverse momentum square agree well with the SPS data. From the comparison with the coalescence model where charm quark is fully thermalized, our calculated elliptical flow of the primordially produced $J/\psi$ is much smaller. This may be helpful to differentiate the $J/\psi$ production mechanisms in relativistic heavy ion collisions.

6 pages, 4 figures

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