Impact-parameter analysis of exclusivep¯p(5.7 GeV/c) andp¯

Abstract

Lower bounds for the root-mean-square impact parameter have been obtained for a set of 27 exclusive fiinduced reactions. A comparison between annihilation, production, and coherent reactions is carried out. In order to see whether or not the lower bounds have a real connection with the actual impact parameter we have also analyzed the production processes by means of collective or multiparticle variables evaluated event by event.