Pseudorapidity-interval dependence of multiplicity distributions of shower particles produced in high energy interactions of protons at 800 GeV, 4 He at ≈ 11 A GeV, and 28 Si at 14.5 A GeV in nuclear emulsions have been investigated. The multiplicity distributions and correlated moments are parametrised successfully in terms of a negative binomial distribution (NBD). The heavy-ion data for NBD agree well with the predictions of the multistring Monte Carlo code VENUS.
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Multiplicity and angular distributions of shower, grey, and black particles produced in the interactions of S32 at 200A GeV, O16 at 200 and 60A GeV, and He4 at ∼140A GeV in emulsion are compared with the predictions of a Monte Carlo code which takes into account the internuclear cascading. The correlations between the various parameters belonging to the same or to the different kinds of particles are discussed. The data on shower and grey particles from all the beams are well described by the code. However, the black prong data show a significant departure from this model.
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