J/psi suppression at SPS and RHIC in the comovers approach

The NA50 collaboration data on the $J\mathrm{/}\psi$ suppression are compared with the results obtained in a comovers approach based on the Dual Parton Model (DPM). Predictions for the $J\mathrm{/}\psi$ suppression versus the charged multiplicity - measured in the rapidity region of the dimuon trigger - are given for SPS and RHIC energies.