12-18 August 2012
US/Eastern timezone

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Measurements of Non-photonic Electrons Production and Elliptic Flow in 39, 62.4 and 200 GeV Au+Au Collisions from STAR at RHIC

17 Aug 2012, 16:50
20m
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Oral Presentation Heavy flavor and quarkonium production Parallel 7A: Heavy Flavor & Quarkonia (Chair F. Antinori)

Speaker

Mustafa Mustafa (Purdue University)

Description

Heavy quarks are produced early in the heavy-ion collisions and are expected to interact with the created strongly interacting partonic medium differently from light quarks. Therefore, they can shed new light on understanding the medium's properties. Simultaneous measurements of spectra and elliptic flow of electrons from semileptonic decays of heavy flavor hadrons at different collision energies and centralities can provide experimental insight to distinguish different energy loss theoretical models and to characterize the degree of thermalization of heavy quarks at different energies. We will present STAR measurements of non-photonic electrons at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}} = 39$, $62.4$ and $200$ GeV. The data were taken during 2010 run with detector configurations for minimum photonic conversion background. Both the invariant yields and elliptic flow measurements will be reported as a function of $p_T$, centrality and collision energy. We will also report non-photonic electrons nuclear modification factor, $R_{AA}$, at $\sqrt{s_{NN}} = 200$GeV.

Primary author

Mustafa Mustafa (Purdue University)

Presentation Materials

Paper

Paper files: