Consistent hydrodynamic description of one- and two-particle observables in relativistic heavy-ion collisions at RHIC

TL;DR

This paper demonstrates that using a Gaussian energy density profile as initial conditions in hydrodynamic models can simultaneously describe various soft-hadronic observables in RHIC heavy-ion collisions, potentially solving the HBT puzzle.

Contribution

It introduces a consistent hydrodynamic framework with Gaussian initial conditions that reproduces multiple experimental observables in heavy-ion collisions.

Findings

Successful reproduction of transverse-momentum spectra

Accurate modeling of elliptic flow coefficient v2

HBT radii consistent with experimental data

Abstract

We show that a consistent hydrodynamic description of soft-hadronic one- and two-particle observables (the HBT radii) studied in the relativistic heavy-ion collisions at RHIC may be obtained if one uses the Gaussian energy density profile as the initial condition. The transverse-momentum spectra, the elliptic flow coefficient $v_2$, and the pionic azimuthally sensitive HBT radii are successfully reproduced, which hints that the long standing HBT puzzle has been solved.