Radiative jet energy loss in a three-dimensional hydrodynamical medium and high $p_T$ azimuthal asymmetry of $\pi_0$ suppression at mid and forward rapidity at RHIC

TL;DR

This paper models jet energy loss in a 3D hydrodynamical medium to analyze high transverse momentum $C0_0$ suppression and azimuthal asymmetry in heavy-ion collisions at RHIC, providing insights for medium tomography.

Contribution

It introduces a comprehensive 3D hydrodynamical model to study jet energy loss and azimuthal asymmetry of $C0_0$ suppression at high $p_T$ in heavy-ion collisions.

Findings

Calculated $R_{AA}$ for $C0_0$ at high $p_T$ matches experimental data.

Analyzed azimuthal asymmetry of $C0_0$ suppression at different rapidities.

Provided a framework for detailed tomography of the nuclear medium.

Abstract

The nuclear modification factor $R_{AA}$ for $\pi_0$ production in Au+Au collisions at $\sqrt{s}=200$ AGeV is calculated, and studied at high transverse momenta $p_T$. The soft thermalized nuclear medium is described within the framework of relativistic ideal three-dimensional hydrodynamics. The energy loss of partonic jets is evaluated in the context of gluon bremsstrahlung in the thermalized partonic matter. We provide a systematic analysis of the azimuthal asymmetry of $\pi_0$ suppression at high $p_T$ in central and non-central collisions, at mid and forward rapidity. The determination of $R_{AA}$ as a function of $p_T$, at different azimuthal angles, and different rapidities makes for a stringent test of our theoretical understanding of jet energy loss over a variety of in-medium path lengths, temperatures and initial partonic jet energies. This lays the groundwork for a precise tomography of the nuclear medium.