Hydrodynamic event-plane correlations in Pb+Pb collisions at sqrt(s)=2.76ATeV

TL;DR

This paper demonstrates that hydrodynamic models can explain the correlations between flow angles in Pb+Pb collisions at 2.76 ATeV, highlighting their dependence on initial conditions and shear viscosity.

Contribution

It shows that flow angle correlations are of hydrodynamic origin and sensitive to initial conditions and shear viscosity, providing insights into the medium's properties.

Findings

Flow angle correlations are hydrodynamic in origin.

Correlation strength depends on initial conditions.

Correlation strength depends on shear viscosity.

Abstract

The recently measured correlations between the flow angles associated with higher harmonics in the anisotropic flow generated in relativistic heavy-ion collisions are shown to be of hydrodynamic origin. The correlation strength is found to be sensitive to both the initial conditions and the shear viscosity of the expanding fireball medium.