2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81673Hadron multiplicities in nucleus--nucleus interactions are calculated in the Dual Parton Model and its dependence on the number of collisions and the number of participants is analyzed. Shadowing corrections are calculated as a function of impact parameter and the multiplicity per participant as a funtion of centrality is found to be in agreement with experiment at SPS and RHIC energies. The obtained results are used to compute the $J/ψ$ suppression in a comover approach.4 pages, 4 postscript figures. Talk given at XXXVI Rencontres de Moriond, Les Arcs, France, March 2001Nuclear Theorytext