Multi-chain model for hadron-nucleus and nucleus-nucleus collisions at very high energies

The use of the multi-chain model (MCM) for hadron-nucleus and nucleus-nucleus interactions at high energies is considered. The basic assumption in MCM for hadron-nucleus interaction is that only the incident hadron can interact repeatedly with nucleons inside the nucleus while the cascade interaction of newly produced particles is negligibly small. The data on pseudo-rapidity distributions are described in the framework of MCM. It is shown that MCM gives a unified description of hadron-nucleus and nucleus-nucleus collisions at various energies and all kinematical regions at small transverse momentum