High-energy hadron-nucleus collisions

A new space-time model for hadron-nucleus collisions is proposed, where produced particles at the instant of creation not only are immature, but their maturity rate is enhanced in the presence of other hadronic matter, as in a nucleus. The model's only free parameter, describing the maturity enhancement, is fixed by normalizing to the 200-GeV p-A multiplicity data at a fixed A. The parameter-free model then predicts correctly the p-A differential multiplicity as functions of the pseudo-rapidity eta and A, the multiplicity energy dependence, the ..pi..-A differential multiplicity, and the A-dependences of sigma/suppA//sub in/ and sigma /sup ..pi..A//sub in/. It is also shown quantitatively that the so-called ''cut type model'' and ''fan-plus-cut type model'' do not agree with the data.