S. Pratt et V. Zelevinsky, EXPLAINING CENTAURO EVENTS BY FORMATION OF PIONS IN THE ISOSPIN SINGLET CHANNEL, Physical review letters, 72(6), 1994, pp. 816-819
Peculiar cosmic ray events (Centauros) with anomalously large fluctuat
ions in their isospin composition have been observed during the past t
wenty years. Multiparticle symmetrization has been put forward as an e
xplanation of the effect. In this Letter we show how the formation of
pions through the sigma channel when combined with symmetrization can
lead to a scenario where the isospin distribution is not only broadene
d but inverted. For reasonable choices of parameters we find that even
ts can actually prefer consisting of either nearly all neutral or all
charged pions.