Gluon dissociation ofJ/ψin anisotropic quark-gluon plasma

Abstract

We calculate the gluon dissociation cross section in an anisotropic quark gluon plasma expected to be formed in relativistic nucleus-nucleus collisions. It is shown that the thermally weighted cross section of gluon dissociation undergoes modification in anisotropic plasma, affecting the $J/\ensuremath{\psi}$ survival probability. The dependence of the cross section on the direction of propagation of the charmonium with respect to the anisotropy axis is presented. Survival probability of $J/\ensuremath{\psi}$ in two different space-time models of anisotropic quark gluon plasma (AQGP) has been calculated. It is shown that, depending upon the initial conditions [corresponding to Relativistic Heavy Ion Collider (RHIC) energies], the survival probability in AQGP differs from that in isotropic QGP both in the central as well as forward rapidity regions. For initial conditions relevant for Large Hadron Collider (LHC) energies, a marginal difference between the the two space-time models has been observed with given initial conditions.