Theoretical Developments in QCD Jet Energy Loss

TL;DR

This paper reviews recent theoretical advances in understanding jet energy loss in quark-gluon plasma, focusing on cascade processes, decoherence effects, and higher-order radiative corrections impacting jet-quenching parameters.

Contribution

It introduces a detailed analysis of coherent and incoherent cascades, their interplay, and the calculation of higher-order corrections to jet-quenching parameters in QCD.

Findings

Analysis of vacuum and medium-induced cascades

Discussion of partial decoherence in jet structures

Calculation of radiative corrections to jet-quenching parameters

Abstract

We review the recent developments in the theory of jet-quenching. First, we analyze the coherent vacuum cascade and incoherent medium-induced cascade separately. We then discuss the interplay between the two kinds of cascade and the resulting partial decoherence of the inner jet structure. Finally, we report on recent calculations of higher-order corrections. In particular, the dominant radiative corrections to jet observables that yield the renormalization of the jet-quenching parameter are addressed.