Article ID Journal Published Year Pages File Type
1835804 Nuclear Physics A 2014 6 Pages PDF
Abstract

The PHENIX experiment has published direct photon yields and elliptic flow coefficients v2v2 from Au+Au collisions at RHIC energies [1] and [2]. These results have sparked much theoretical discussion. The measured yields and flow parameters are difficult to reconcile in current model calculations of thermal radiation based on hydrodynamic evolution of the collision volume. Our latest analyses which use high statistics data from the 2007 and 2010 runs allow the determination of direct photon yields with finer granularity in centrality and photon momentum and down to pTpT as low as 0.4 GeV/c0.4 GeV/c. We will summarize the current status and present new results from PHENIX.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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