Abstract
We modified the standard Glauber model calculations of number of participants (Nw), number of collisions (Ncoll) and their dispertions using a simplified estimate of the energy loss in nucleon-nucleon collision. A fraction equal to 1-k of the initial nucleon momentum is allowed to be lost in each inelastic interaction, so that two "nucleon-like structures", emerging after the nucleon-nucleon inelastic process, have lower momenta. Therefore, further "nucleonnucleon" inelastic collisions take place at a lower energy sqrts and with the experimentally known cross-section (σinelpp(sqrts). We obtain a considerable reduction in the number of collisions Ncoll and in the total mean number of charged particles Nch, compared to the standard Glauber approach, while the number of participants Nw is practically unchanged. The model incorporates the experimental values of the average charged particle multiplicity for pp and pp̄ collisions as a function of sqrts, so that the total mean number of charged particles (Nch) could be calculated and compared with the heavy-ion collision data. This model has been used to describe the available data on the average multiplicity obtained for PbPb and AuAu collisions from AGS to RHIC energies. Possible applications of this model to the pA and dA multiplicity data analysis are also discussed.
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