Autor: Nogová Anna; Masarik, Jozef; Pišút, Ján; Pišútová, Neva
Názov: What is the time of particle production in hadronic collisions?
Typ: publication
Dátum: 1996
Jazyk: en
Poznámka:
Abstrakt:
Formation time of nal state particles in hadronic collisions is studied in a
very simple model which contains the formation time as a free parameter to be
determined by comparison of calculated Bose-Einstein correlation functions
with the available data. Final state pions are either products of resonance
decays or are "directly" produced. The "direct" production is simulated by
an immediate decay of a resonance. For "direct pions" forming about a half of
nal state pions and for formation times of resonances within the interval 0.2-
0.4 fm/c we get density of sources which leads to Bose-Einstein correlations
of two identical pions consistent with recent data. The formation time of
0.2 to 0.4 fm/c is shorter then expected and it may have consequences for
construction of models of proton-nucleus and nucleus-nucleus interactions.
Presented at the Workshop on Heavy Ion Physics, Bratislava, Sept. 2nd-6th.
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