Investigation of the linear and mode-coupled flow harmonics in Au+Au collisions at $\sqrt{{\text{s}}_{NN}}$ = 200 GeV

Abstract

Flow harmonics (${\text{v}}_n$) of the Fourier expansion for the azimuthal distributions of hadrons are commonly employed to quantify the azimuthal anisotropy of particle production relative to the collision symmetry planes. While lower order Fourier coefficients (${\text{v}}_2$ and ${\text{v}}_3$) are more directly related to the corresponding eccentricities of the initial state, the higher-order flow harmonics (${\text{v}}_{n>3}$) can be induced by a mode-coupled response to the lower-order anisotropies, in addition to a linear response to the same-order anisotropies. These higher-order flow harmonics and their linear and mode-coupled contributions can be used to more precisely constrain the initial conditions and the transport properties of the medium in theoretical models. The multiparticle azimuthal cumulant method is used to measure the linear and mode-coupled contributions in the higher-order anisotropic flow, the mode-coupled response coefficients, and the correlations of the event plane angles for charged particles as functions of centrality and transverse momentum in Au+Au collisions at nucleon-nucleon center-of-mass energy $\sqrt{{\text{s}}_{NN}}$ = 200 GeV. The results are compared to similar LHC measurements as well as to several viscous hydrodynamic calculations with varying initial conditions.

15 pages, 4 figures, submitted for publication

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• Precision tests of the nonlinear mode coupling of anisotropic flow via high-energy collisions of isobars
• Collision-System and Beam-Energy Dependence of Anisotropic Flow Fluctuations
• Measures of azimuthal anisotropy in high-energy collisions
• Beam energy dependence of the linear and mode-coupled flow harmonics in Au+Au collisions
• Characterizing the initial and final state effects of relativistic nuclear collisions
• A model investigation of the longitudinal broadening of the transverse momentum two-particle correlator
• Beam Energy Dependence of the Linear and Mode-Coupled Flow Harmonics Using the A Multi-Phase Transport Model
• Azimuthal dependence of two-particle transverse momentum current correlations
• Bayesian reconstruction of anisotropic flow fluctuations at fixed impact parameter
• Measuring differential particle correlations in relativistic nuclear collisions
• Investigations of the linear and non-linear flow harmonics using the A Multi-Phase Transport model