Jet quenching from RHIC to LHC

TL;DR

This paper analyzes jet quenching data from RHIC and LHC using a light-cone path integral approach, revealing a suppressed QCD coupling constant at LHC energies based on the observed nuclear modification factors.

Contribution

It introduces a joint analysis method of RHIC and LHC data using the light-cone path integral approach to study jet quenching.

Findings

Slow variation of $R_{AA}$ from RHIC to LHC energies.

Suppressed QCD coupling constant at LHC energies.

Consistent description of jet quenching across both colliders.

Abstract

We perform a joint analysis of the data from PHENIX at RHIC and ALICE at LHC on the nuclear modification factor $R_{AA}$. The computations are performed within the light-cone path integral approach to induced gluon emission. Our results show that slow variation of $R_{AA}$ from RHIC to LHC energies indicates that the QCD coupling constant is suppressed in the quark-gluon plasma produced at LHC.