Measurements of Non-photonic Electron Production and Azimuthal Anisotropy in $\sqrt {s_{NN}} = 39$, 62.4 and 200 GeV \auau\ Collisions from STAR at RHIC

摘要

During RHIC 2010 run, STAR has collected a large amount of minimum-bias,central and high $p_{T}$ trigger data in Au+Au collisions at $\sqrt{s_{NN}} =39$, 62.4 and 200 GeV with detector configuration for minimum photonicconversion background. In this article we report on a new high precisionmeasurement of non-photonic electron mid-rapidity invariant yield, improvednuclear modification factor and $v_{2}$ in Au+Au collisions at $\sqrt{s_{NN}} =200$ GeV. We also present measurements of mid-rapidity invariant yield at$\sqrt{s_{NN}} = 62.4$ and $v_{2}$ at $\sqrt{s_{NN}} = 39$ and 62.4 GeV.