High-order anisotropic flow and nonlinear hydrodynamic responses

TL;DR

This study investigates high-order anisotropic flow coefficients in heavy-ion collisions using advanced simulations, revealing insights into nonlinear hydrodynamic responses and comparing results with experimental data.

Contribution

The paper introduces a detailed analysis of high-order flow coefficients up to n=12 using event-by-event simulations and explores nonlinear mode contributions, advancing understanding of hydrodynamic responses.

Findings

Flow coefficients up to n=12 are successfully simulated.

Comparison shows good agreement with ALICE experimental data.

Nonlinear mode analysis elucidates sources of high-order flow.

Abstract

In this work, we study the charged hadron anisotropic flow coefficients $v_n$ (up to $n = 12$) using high-statistics event-by-event simulations of Pb+Pb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ and $5.36$~TeV, employing the IP-Glasma + MUSIC + UrQMD hybrid approach. The power spectra of anisotropic flow coefficients ($v_n\{2\}$ vs. $n$) are compared with the ALICE measurements from central to 50% centrality. To understand the various sources contributing to the high-order $v_n$ coefficients, we analyze the nonlinear mode coefficients for high-order anisotropic flow coefficients using different approximations and make comparisons with available measurements.