No abstract

No abstract

Leading nucleon spectra on nuclear targets are analyzed by the multi-chain model with sequential collision of the leading cluster. It is shown that the model can successfully repro· duce both the leading particle spectra and the charged particle distribution. The inelasticity of the leading cluster turned out to be smaller than 0.2 which gives a strong constraint on any type of multiple collision models. § I. IntroductionIn the hadron-nucleus (h-~1) interactions, the nucleus plays the role of the target for both incident hadron and newly produced hadronic systems. Therefore the investigation of h-A collisions will give us peculiar information about the space-time development of hadron interactions and the many-body structure of hadrons which cannot be obtained through usual hadron-hadron (h-h) collisions. \V e have analyzed h-~1 interaction based on the multi-chain model (MCM),!)where the beam hadron has independent multiperipheral chains connecting the beam particle and each nucleon inside the nucleus. The resulting picture of the interaction is presented schematically in Fig. 1. Our previous investigation was mainly concerned with the partition of the beam energy among the chains, where three models were considered, namely the equipartition modeFl (Model I), the model taking account of the inequality (Model II) and the sequential collision model (Model III). The result obtained is that any of them cannot be eliminated at all by comparing only the pseudorapidity distribution of the charged particles. (For the details, see Ref. 1) . )In this paper the leading particle spectra on nuclear targets are analyzed by a generalized version of Model III and it is shown that the leading cluster should carry most of the momentum fraction of the incident hadron (i.e., the elasticity Fig. 1. Multi-chain model (general) at

No abstract

No abstract