The elliptic flow of di-electrons in $\sqrt{s_{NN}}$=200 GeV Au+Au collisions at STAR

TL;DR

This paper reports measurements of the elliptic flow ($v_{2}$) of di-electrons in gold-gold collisions at 200 GeV, comparing experimental data with simulations across different mass and transverse momentum regions.

Contribution

It provides the first detailed measurement of di-electron elliptic flow in Au+Au collisions at this energy, including differential $v_{2}$ as a function of transverse momentum.

Findings

Measured $v_{2}$ of di-electrons in various mass regions.

Comparison between simulated and experimental $v_{2}$ values.

Insights into the medium's properties affecting di-electron flow.

Abstract

In minimum bias (0-80%) Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV, the elliptic flow ($v_{2}$) measurements for di-electrons from the low to intermediate mass region are presented. The differential elliptic flow as a function of transverse momentum in different mass regions are also reported. The simulated and measured $v_{2}$ of di-electrons are compared in the mass regions of $M_{ee}<0.14$ GeV/$c^{2}$ and $0.14<M_{ee}<0.3$ GeV/$c^{2}$.