  Neutral pion number N0 distributions for each total number of particles in
event Ntot=Nch+N0 are obtained. The scaled variance of neutral pion
fluctuations, omega=D/<N0>, is measured. The fluctuations increase at Ntot >22.
According to quantum statistics models it may indicate for the approaching to
pion condensate conditions for high pion multiplicity in the system.

High Energy Physics - Experiment