Beam energy dependence of the anisotropic flow coefficients v$_n$

TL;DR

This paper reports measurements of anisotropic flow coefficients in gold-gold collisions across a wide range of beam energies, providing data crucial for understanding the quark-gluon plasma and constraining theoretical models.

Contribution

It presents new experimental data on v$_n$ coefficients over multiple energies, aiding the testing of initial-state models and the extraction of shear viscosity properties.

Findings

Dependence of v$_n$ on harmonic number, $p_T$, $ heta$, centrality, and energy.

Data can constrain initial-state models and shear viscosity estimates.

Provides comprehensive energy-dependent flow measurements.

Abstract

Recent STAR measurements of the anisotropic flow coefficients, v$_{n}$, are presented for Au+Au collisions spanning the beam energy range $\sqrt{s_{NN}} = 7.7 - 200$~GeV. The measurements indicate dependences on harmonic number, $n$, transverse momentum ($p_T$), pseudorapidity ($\eta$), collision centrality ($\mathrm{cent}$) and beam energy ($\sqrt{s_{NN}}$) which could serve as important constraints to test different initial-state models and to aid precision extraction of the temperature dependence of the specific shear viscosity.