Di-jet hadron pair correlation in a hydrodynamical model with a quenching jet

TL;DR

This paper models how quenched jets deposit energy into quark-gluon plasma, affecting di-hadron correlations, and compares the results with experimental data from STAR and PHENIX.

Contribution

It introduces a hydrodynamical simulation of jet quenching effects on di-hadron correlations in heavy-ion collisions.

Findings

Hydrodynamic evolution reproduces experimental di-hadron correlations.

Jet energy deposition influences azimuthal particle distributions.

Model aligns with STAR and PHENIX measurements.

Abstract

In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-$p_T$ hadrons. Assuming that the deposited energy quickly thermalizes, we simulate the subsequent hydrodynamic evolution of the QGP fluid. Hydrodynamic evolution and subsequent particle emission depend on the jet trajectories. Azimuthal distribution of excess $\pi^-$ due to quenching jet, averaged over all the trajectories, reasonably well reproduce the di-hadron correlation as measured by the STAR and PHENIX collaboration in central and in peripheral Au+Au collisions.