Azimuthal asymmetry of J/Psi suppression in non-central heavy-ion collisions
arXiv:nucl-th/0202018 · doi:10.1016/S0370-2693(02)02121-4
Abstract
The azimuthal asymmetry of $J/Ï$ suppression in non-central heavy-ion collisions is studied within a dynamic model of $J/Ï$ suppression in a deconfined partonic medium. Within this model, $J/Ï$ suppression in heavy-ion collisions is caused mainly by the initial state nuclear absorption and dissociation via gluon-$J/Ï$ scattering in deconfined partonic medium. Only the second mechanism gives arise to azimuthal asymmetry of the final $J/Ï$ production. We demonstrate that if there is an onset of suppression by quark-gluon plasma (QGP) in the NA50 data, it must be accompanied by the non-vanishing azimuthal asymmetry. Using the same critical density above which the QGP effect enters, we predict the azimuthal asymmetric coefficient $v_2$ as well as the survival probability for $J/Ï$ at the RHIC energy.
10 pages, 2 EPS figures, final version in Phys. Lett. B