3 Simulation of antiproton - nucleus interactions in the framework of the UrQMD model

For implementation of the PANDA project (GSI) an antiproton-nucleus event generator is needed. In our paper we propose to apply the Ultra-Relativistic Quantum Molecular Dynamic (UrQMD) approach for this aim. Using the UrQMD model, simulation of ¯ pA-interactions at antiproton energies from 1 GeV to 200 GeV has been performed. We studied the average multiplicities, the multiplicity distributions of various types of secondary particles, correlations between the multiplicities, rapidity, and transverse momentum distributions of the particles. It was found that the UrQMD model predictions on inelastic ¯ pA-collisions reproduced qualitatively the experimental data. However, to reach the quantitative agreement, especially, in fragmentation regions, it is needed to modify the UrQMD model.