Productions of $\eta$, $\rho^0$ and $\phi$ at large transverse momentum in Heavy ion Collisions

TL;DR

This paper uses perturbative QCD to analyze the suppression of $ ext{eta}$, $ ho^0$, and $ ext{phi}$ meson production at high transverse momentum in heavy-ion collisions, providing theoretical predictions that match experimental data and shed light on jet quenching effects.

Contribution

The paper offers the first theoretical predictions for vector meson production in heavy-ion collisions within the pQCD framework, enhancing understanding of hadron suppression and jet quenching.

Findings

Theoretical predictions match experimental measurements of meson suppression.

Hadron production ratios reveal information about energy loss in QGP.

Evidence supports strong suppression of high-$p_T$ hadrons due to jet quenching.

Abstract

The suppression of the productions of the $\eta$ meson in relativistic heavy-ion collisions and its ratio of $\eta/\pi^0$ are computed theoretically in the framework of the perturbative QCD(pQCD) to confront the experimental data which matches well. We explore how the hadron production ratios as$\eta/\pi^0$ would further disclose the informations of the production suppressions due to the energy loss of the energetic jet that propagating though the QGP medium. Also, we present our further studies on vector mesons such as $\rho^0$ and $\phi$ within the same framework. The theoretical predictions based on pQCD are thus firstly given which give a decent description on the experimental measurements. It paved the way to the uniformly understanding of the strong suppression of single hadron productions at large transverse momentum which is a convincing evidence of the jet quenching effect.