Transversal Flow of Pions as a Consequence of Rescattering Process in non-central Pb+Pb 158GeV/n heavy ion collisions

Abstract

Aim of this work was to test the idea of J.-Y.Ollitrault about the parallel squeeze-out type of transversal flow in mid-rapidity region. For this purpose we have performed a computer simulation of the expanding pion gas created in non-central Pb-Pb 158GeV/n collisions. A squeeze-out type of asymmetry parallel to impact parameter in azimuthal distribution of pions is found and studied. The asymmetry is explained as a consequence of geometry of non-central collisions and the rescattering process.