Role of the cascade interactions on the multiplicity distribution in hadron-nucleus collisions

Multiplicity distribution in proton-nucleus (p-A) collisions are investigated by the use of the Monte Carlo event generator MCMHA which has been developed based on the multi-chain model. The comparisons between the calculational results of MCMHA and the data are made through the parameters of negative binomial distributions. We can find nice agreement between them. The interpretation for the difference in the behaviour of 1/k in the backward hemisphere between p(anti p)-p and p-A collisions is presented. In this connection, we also discuss the multiplicity ratio pA/pN. (orig.)