Transverse momentum and centrality dependence of high-pt non-photonic electron suppression in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
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Transverse momentum and centrality dependence of high-pt non-photonic electron suppression in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Abstract

The STAR collaboration at RHIC reports measurements of the inclusive yield of non-photonic electrons, which arise dominantly from semi-leptonic decays of heavy flavor mesons, over a broad range of transverse momenta (1.2 < pt < 10 gevc) in pp, dAu, and AuAu collisions at sqrt sNN = 200 GeV. The non-photonic electron yield exhibits unexpectedly large suppression in central AuAu collisions at high pt, suggesting substantial heavy quark energy loss at RHIC. The centrality and \pt dependences of the suppression provide constraints on theoretical models of suppression.

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