$J/\Psi$ and ${\Psi }^{\prime }$ Suppression in Heavy Ion Collisions

Abstract

We study the combined effect of nuclear absorption and final state interaction with co-moving hadrons on the $J/\Psi$ and ${\Psi }^{\prime }$ suppression in proton-nucleus and nucleus-nucleus collisions. We show that reasonable description of the experimental data can be achieved with theoretically meaningful values of the cross-sections involved and without introducing any dicontinuity in the $J/\Psi$ or ${\Psi }^{\prime }$ survival probabilities.

Comments: 10 pages, TeX, 2 Postscript figures