Measurement of pi0 and eta Mesons with PHENIX in sqrt(s_NN) = 200 GeV Au+Au Collisions at RHIC

Details Measurement of pi0 and eta Mesons with PHENIX in sqrt(s_NN) = 200 GeV Au+Au Collisions at RHIC Measurement of pi0 and eta Mesons with PHENIX in sqrt(s_NN) = 200 GeV Au+Au Collisions at RHIC

2008-06-02

arxiv.org/abs/0806.0261v1

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 4 figures; to appear in the poster proceedings of the 20th International Conference on Ultra-Relativistic Nucleus-Nuc

Scientific paper

The pi0 meson has been a crucial proble for observing jet quenching in ultrarelativistic heavy-ion collisions at RHIC. Measurements of the eta meson in the same collisions have also shed light on a possible dependence of the observed suppression on the particle species. The preliminary pi0 nuclear modification factor R_AA from the 2004 RHIC run allowed a first systematic comparison between a precise measurement with high statistics and theoretical calculations, constraining model parameters such as the initial gluon density dN^g/dy, and the transport coefficient qhat. The final pi0 spectra and R_AA are shown as well as the first eta results obtained with both PHENIX electromagnetic calorimeters.

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