DISTRIBUTION OF NEUTRAL AND CHARGED PIONS THROUGH THE PRODUCTION OF ACLASSICAL PION FIELD

High-energy reactions may produce a state near the collision point tha t is best described by a classical pion field. Such a field might be a n isospin rotated vacuum of the chiral sigma-model or, as discussed in this work, a solution of the equations of motion resulting from the c oupling of fields of this model to quarks produced in the collision. I n such configurations all directions in isospin space are allowed. Thi s circumstances leads to a sizable probability of events with essentia lly only charged particles (centauros) or all neutral particles (anti- centauros). (In more common statistical models of multiparticle produc tion, the probability of such events is suppressed exponentially by th e total multiplicity.) We find that the isospin violation due to the m ass difference of the up and down quarks has a significant effect on t hese distributions and enhances the production of events consisting pr edominantly of neutral particles.