Maximum fluctuations of charged particle densities in narrow pseudorapidity space at ultrarelativistic nuclear collisions

Abstract

A study of multiparticle correlations on the basis of the maximum fluctuation of the charged particle density in narrow pseudorapidity intervals in Monte Carlo background particles has been carried out with ${}^{16}\mathrm{O}\ensuremath{-}\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ interactions at $60A\mathrm{GeV}$ and ${}^{32}\mathrm{S}\ensuremath{-}\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ interactions at $200A\mathrm{GeV}.$ The study reveals the existence of dynamical multipion correlation in the pseudorapidity interval 0.1\char21{}1 for both data sets. Further study suggests that in each case the maximum charged particle density in a given pseudorapidity interval increases linearly with charged particle multiplicity.