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

TL;DR

This paper reports high-precision measurements of non-photonic electron production and azimuthal anisotropy in Au+Au collisions at three different energies, providing insights into heavy flavor quark behavior in quark-gluon plasma.

Contribution

It presents the first high-precision measurements of non-photonic electron yields and flow at multiple RHIC energies, improving understanding of energy dependence in heavy-ion collisions.

Findings

Enhanced understanding of non-photonic electron suppression at 200 GeV

First measurements of electron azimuthal anisotropy at 39 and 62.4 GeV

Data supports models of heavy quark energy loss in quark-gluon plasma.

Abstract

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 photonic conversion background. In this article we report on a new high precision measurement of non-photonic electron mid-rapidity invariant yield, improved nuclear 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.