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In high energy nuclear collisions, the conventional Glauber model is commonly used to evaluate the contribution to $J/��$ suppression originating from the inelastic interaction with colorless bound nucleons. This requires an effective value for the $J/��$-nucleon absorption cross section which is larger than theoretically expected. On the other hand, multiple nucleon-nucleon collisions mediated by color exchange interactions, excite their color degrees of freedom. We investigate the importance of this effect and find that these excited states provide a larger cross section for $J/��$ absorption. We conclude that the related corrections are important to explain the effective value extrapolated from experiment., 21 pages Latex, 8 postscript figures

The observed J/psi suppression in Pb+Pb collisions shows a drop at those large values of the transverse energy E_T which arise from fluctuations. The validity of existing models for J/psi suppression can be extended into this domain of E_T by introducing an ad hoc factor proportional to E_T. We propose a formalism in which the influence of E_T fluctuations on the J/psi suppression can be calculated and discuss the conditions under which the ad hoc factor is obtained., Comment: 10 pages LaTeX, 2 postscript figures, revised version with several changes and additions