On the Role of Initial Conditions and Final State Interactions in Ultrarelativistic Heavy Ion Collisions

TL;DR

This paper examines how initial conditions and final state interactions influence the rapidity dependence of elliptical flow in ultrarelativistic heavy ion collisions using 3D hydrodynamics, revealing a strong correlation with initial energy distribution.

Contribution

It demonstrates that the pseudo-rapidity dependence of elliptical flow closely mirrors the initial energy distribution's space-time-rapidity profile, regardless of freeze-out scenarios.

Findings

Elliptical flow's rapidity dependence mirrors initial energy distribution.

The form of pseudo-rapidity dependence is independent of freeze-out prescriptions.

Hydrodynamic evolution captures key features of flow in heavy ion collisions.

Abstract

We investigate the rapidity dependence of the elliptical flow in heavy ion collisions at 200 GeV (cms), by employing a three-dimensional hydrodynamic evolution, based on different initial conditions, and different freeze-out scenarios. It will be shown that the form of pseudo-rapidity ($\eta$) dependence of the elliptical flow is almost identical to space-time-rapidity ($\eta_{s}$) dependence of the initial energy distribution, independent of the freeze-out prescriptions.