F. Cannata et al., MESON PRODUCTION AND BOSE-EINSTEIN PION CORRELATIONS IN HIGH-ENERGY COLLISIONS, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 358(3), 1997, pp. 275-276
The pion Bose Einstein correlation parameters determined by OPAL show
a weak dependence on pion multiplicity. We argue that the observed inc
rease of the interaction radius, and the decrease of the chaoticity pa
rameter could be due to an increasing fraction of other mesons at high
multiplicities.