Search for Quark-Gluon Plasma in Nucleus-Nucleus Collisions at 3.2 TeV

Abstract

First results from measurements of all the shower particles produced in 191 nearly central interactions of a 200-GeV/nucleon ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ beam with nuclear emulsion are presented. The lower limit of the average energy density for the events with multiplicity $n_s\ge 200$ is $〈\epsilon 〉\simeq 1$ GeV/${\mathrm{fm}}^3$.