Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-12-19
Ukr.Phys.J.49:935-939,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, revtex4, 3 figures
Scientific paper
Within recently proposed approach aimed to effectively describe the observed non-Bose type behavior of the intercept \lambda of two-particle correlation function C(p,K) of identical pions or kaons detected in heavy-ion collisions, the q-deformed oscillators and q-Bose gas picture are employed. For the intercept \lambda, connected with deformation parameter q, the model predicts a fully specified dependence of \lambda on pair mean momentum {\bf K}. The intercepts \lambda_\pi and \lambda_K for pions and kaons, differing noticeably at small {\bf K}, should merge at {\bf K} large enough, i.e., in the range |{\bf K}| \ge 800 MeV/c, where the effect of resonance decays is negligible. In this paper we confront, fixing q appropriately, the predicted dependence \lambda_\pi=\lambda_\pi({\bf K}) with recent results from STAR/RHIC for \pi^-\pi^- and \pi^+\pi^+ pairs, and find nice agreement. Using the same q, we also predict behavior of \lambda for kaons.
Anchishkin D. V.
Gavrilik Alexandre M.
Panitkin Sergei Y.
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