06 36 7 v 1 1 9 Ju n 19 96 Final state interactions for Bose - Einstein correlations in S + Pb → π + π + + X reaction at energy 200 GeV / nucleon
نویسندگان
چکیده
We applied an analytical formula for Bose-Einstein correlations (BEC) developed by us recently to high-energy heavy ion collisions, in particular to data on S+Pb→ π +-π + +X reaction at energy 200 GeV/nucleon reported by the NA44 Collaboration. It takes into account both Coulomb and strong (π-π s-wave; I=2) final state interactions (FSI). We have found that inclusion of the strong interaction in addition to Coulomb correction affects significantly the extracted parameters of the BEC like the source size R, the degree of coherence λ and the long-range correlation parameter γ. In particular, the λ parameter of the BEC is increased by about 20%. Our results differ from those obtained in e + e − annihilation in the following way: the λ parameter does not reach 'chaotic limit' and the γ parameter does not approach to zero. 1 Introduction: Recently we have presented an analytical formula for Bose-Einstein cor
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