Pion-proton correlations and asymmetry measurement in Au+Au collisions at $\sqrt{s_{NN}}=200$ $GeV$ data

Details Pion-proton correlations and asymmetry measurement in Au+Au collisions at $\sqrt{s_{NN}}=200$ $GeV$ data Pion-proton correlations and asymmetry measurement in Au+Au collisions at $\sqrt{s_{NN}}=200$ $GeV$ data

2010-12-27

arxiv.org/abs/1012.5666v2

Physics

Nuclear Physics

Nuclear Experiment

To be published in the proceedings of VI Workshop on Particle Correlations and Femtoscopy (WPCF2010)

Scientific paper

Correlations between non-identical particles at small relative velocity probe asymmetries in the average space-time emission points at freeze-out. The origin of such asymmetries may be from long-lived resonances, bulk collective effects, or differences in the freeze-out scenario for the different particle species. STAR has extracted pion-proton correlation functions from a dataset of Au+Au collisions at $\sqrt{s_{NN}}=200$ $GeV$. We present correlation functions in the spherical harmonic decomposition representation, for different centralities and for different combinations of pions and (anti-)protons.

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