Selected results on Strong and Coulomb-induced correlations from the STAR experiment

Details Selected results on Strong and Coulomb-induced correlations from the STAR experiment Selected results on Strong and Coulomb-induced correlations from the STAR experiment

2007-02-08

arxiv.org/abs/nucl-ex/0702015v3

Braz.J.Phys.37:925-932,2007

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1590/S0103-97332007000600009

Using recent high-statistics STAR data from Au+Au and Cu+Cu collisions at full RHIC energy I discuss strong and Coulomb-induced final state interaction effects on identical ($\pi-\pi$) and non-identical ($\pi-\Xi$) particle correlations. Analysis of $\pi-\Xi$ correlations reveals the strong and Coulomb-induced FSI effects allowing for the first time to estimate space extension of $\pi$ and $\Xi$ sources and average shift between them. Source imaging technique providing clean separation of these effects from effects due to the source function itself is applied to one-dimensional relative momentum correlation function of identical pions. For low momentum pions and/or non-central collisions large departure from a single-Gaussian shape is observed.

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