12 research outputs found
Centauro- and anti-Centauro-type events
Assuming that leading particles in high-energy hadronic and nuclear
collisions become sources of a classical pion field, we show that the direct
production of pions favors Centauro (mainly charged) events and that the
production of pions through the -type channel favors anti-Centauro
(mainly neutral) events. We also observe a strong negative neutral-charged
correlation in both cases.Comment: 14 pages, 2 pictures, late
Can pions created in high-energy heavy-ion collisions produce a Centauro-type effect?
We study a Centauro-type phenomenon in high-energy heavy-ion collisions by
assuming that pions are produced semiclassically both directly and in pairs
through the isovector channel. The leading-particle effect and the
factorization property of the scattering amplitude in the impact-parameter
space are used to define the classical pion field. By analyzing the joint
probability function for producing neutral
and negative pions from a definite isospin state of the
incoming leading-particle system we show that only direct production of pions
without isovector pairs favors Centauro-type behavior. The presence of
isovector pairs seems to destroy the effect. Our conclusion is supported
through the calculation of two pion correlation parameters, and
, and the average number of neutral pions as
a function of negative pions produced.Comment: 12 pages, 3 pictures, late