Measurement of the multi-hadron decays of omega, Ks and eta-mesons in heavy ion collisions at √s_NN=200 GeV in the PHENIX experiment at RHIC

2007/02/22 by V. Riabov, Riabov, V.
Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #nucl-ex

paper · pdf · doi:10.48550/arxiv.nucl-ex/0702046

6 pages, 4 figures, proceeding to QM2006

arxiv created 2007/02/22 · arxiv updated 2009/12/01

Abstract

The PHENIX experiment at RHIC measured ω, η and K_S⁰-meson production at high p_T in p+p, d+Au and Au+Au collisions at √s_NN=200 GeV. Measurements performed in different hadronic decay channels give consistent results. The measured ratios of all three mesons to π⁰ are found to be flat as a function of p_T in p+p collisions and equal to ω/π⁰=0.81±0.02±0.07, η/π⁰=0.48±0.02±0.02 and K_S⁰/π⁰=0.45±0.01±0.05. Nuclear modification factor measured for ω-mesons in central Au+Au collisions is R_AA=0.4±0.15.

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