Flow, spectra and HBT radii in heavy-ion collisions

TL;DR

This paper uses a 3+1D hydrodynamical model to describe the expansion of fireballs in heavy-ion collisions, successfully reproducing spectra, flow, and correlations, and analyzing viscosity effects.

Contribution

It introduces a comprehensive 3+1D hydrodynamical approach to model heavy-ion collision dynamics and assesses shear viscosity impacts on observables.

Findings

Reproduces transverse momentum spectra, elliptic flow, and HBT correlations.

Shear viscosity corrections are significant mainly for elliptic flow.

Provides estimates of shear viscosity effects at freeze-out.

Abstract

The expansion of the fireball created in relativistic heavy ion collisions is described using the 3+1D hydrodynamical model. Experimentally observed transverse momentum spectra at different rapdities, elliptic flow and HBT correlations of produced particles can be reproduced. We give estimates of shear viscosity corrections at freeze-out, which we find important only for the elliptic flow coefficient.