Measurements of Fourier harmonics of azimuthal anisotropy in Pb+Pb and Xe+Xe collisions

TL;DR

This paper reports detailed measurements of Fourier harmonics of azimuthal anisotropy in Pb+Pb and Xe+Xe collisions at the LHC, focusing on higher order coefficients to understand initial state fluctuations in heavy-ion collisions.

Contribution

It provides new high-statistics measurements of azimuthal anisotropy Fourier coefficients, especially higher order ones, in Pb+Pb and Xe+Xe collisions at the LHC.

Findings

Measurement of $v_{n}$ coefficients in Pb+Pb and Xe+Xe collisions.

Emphasis on higher order Fourier coefficients and initial state fluctuations.

Enhanced understanding of medium properties in ultra-relativistic heavy-ion collisions.

Abstract

The high-statistics data sets collected by the LHC experiments during the heavy-ion runs allow for a detailed study of the azimuthal anisotropy of charged particles. This report presents the selected results of $v_{n}$ measured in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV and Xe+Xe collisions at $\sqrt{s_\mathrm{NN}} = 5.44$ TeV, with emphasis on the higher order Fourier coefficients, $v_{n}$, sensitive to initial state fluctuations of the medium created in ultra-relativistic heavy-ion collisions.