MONTE-CARLO MODEL FOR MULTIPARTICLE PRODUCTION AT ULTRARELATIVISTIC ENERGIES

The Monte Carlo parton string model for multiparticle production in ha dron-hadron, hadron-nucleus, and nucleus-nucleus collisions at high en ergies is described. An adequate choice of the parameters in the model gives the possibility of recovering the main results of the dual part on model, with the advantage of treating both hadron and nuclear inter actions on the same footing, reducing them to interactions between par tons. Also the possibility of considering both soft and hard parton in teractions is introduced. Comparison to the available experimental dat a on nucleon and nuclear collisions, together with predictions for mea n multiplicities, net baryon rapidity distributions, and the temporal evolution of meson densities for heavy ion collisions at the CERN Supe r Proton Synchrotron (194A GeV) and the BNL Relativistic Heavy Ion Col lider (200A GeV) are presented. Furthermore, predictions for charm pro duction at these energies are given.