Elliptic flow from event-by-event hydrodynamics

TL;DR

This paper introduces an event-by-event hydrodynamical model incorporating initial density fluctuations to accurately predict elliptic flow in heavy-ion collisions, matching experimental data across centrality and transverse momentum.

Contribution

It presents a novel hydrodynamical framework that accounts for initial fluctuations and compares well with experimental elliptic flow measurements.

Findings

Successfully reproduces the centrality and p_T dependence of v_2.

Participant plane approximates the event plane effectively.

Provides insights into initial density fluctuation effects.

Abstract

We present an event-by-event hydrodynamical framework which takes into account the initial density fluctuations arising from a Monte Carlo Glauber model. The elliptic flow is calculated with the event plane method and a one-to-one comparison with the measured event plane $v_2$ is made. Both the centrality- and $p_T$-dependence of the $v_2$ are remarkably well reproduced. We also find that the participant plane is a quite good approximation for the event plane.