Jet quenching with $T$-dependent running coupling

TL;DR

This paper investigates jet quenching in heavy ion collisions using a temperature-dependent running coupling, revealing that it reduces differences in optimal coupling values between RHIC and LHC energies and suggests increased thermal suppression at higher temperatures.

Contribution

It introduces a temperature-dependent running coupling in jet quenching analysis, providing new insights into thermal suppression effects across different collision energies.

Findings

Temperature-dependent coupling reduces RHIC-LHC differences.

Thermal suppression of _s increases with temperature.

Supports the role of temperature in jet quenching dynamics.

Abstract

We perform an analysis of jet quenching in heavy ion collisions at RHIC and LHC energies with the temperature dependent running QCD coupling. Our results show that the $T$-dependent QCD coupling largely eliminates the difference between the optimal values of $\alpha_s$ for the RHIC and LHC energies. It may be viewed as direct evidence of the increase of the thermal suppression of $\alpha_s$ with rising temperature.