New cascade model calculation of pion multiplicity in high-energy heavy-ion collisions

Pion multiplicities in nuclear collisions are calculated using the nuclear cascade model developed by Kitazoe et al. This cascade model differs in particular from previous models in the way binding, Pauli principle, and Fermi motion effects are treated. The treatment of such details in the cascade is found to have significant influence on the pion multiplicities. Close agreement with the Ar + KCl central collision data is obtained without introducing the compressional energy effect postulated by Stock et al. (orig.)