Measurement of pi0 and eta Mesons with PHENIX in sqrt(sNN) = 200 GeV Au+Au Collisions at RHIC
Abstract
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 RAA 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 dNg/dy, and the transport coefficient qhat. The final pi0 spectra and RAA are shown as well as the first eta results obtained with both PHENIX electromagnetic calorimeters.
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