Generalization of radiative jet energy loss to non-zero magnetic mass

TL;DR

This paper extends a jet energy loss formalism in QCD media to include non-zero magnetic mass, addressing non-perturbative effects and their impact on jet quenching predictions in heavy ion collisions.

Contribution

It generalizes the existing energy loss formalism to incorporate non-zero magnetic mass, providing a more realistic model aligned with non-perturbative findings.

Findings

Finite magnetic mass alters energy loss calculations.

Constraints on magnetic to electric mass ratio are identified.

Implications for jet quenching predictions at RHIC and LHC.

Abstract

Reliable predictions for jet quenching in ultra-relativistic heavy ion collisions require accurate computation of radiative energy loss. With this goal, an energy loss formalism in a realistic finite size dynamical QCD medium was recently developed. While this formalism assumes zero magnetic mass - in accordance with the one-loop perturbative calculations - different non-perturbative approaches report a non-zero magnetic mass at RHIC and LHC. We here generalize the energy loss to consistently include a possibility for existence of non-zero magnetic screening. We also present how the inclusion of finite magnetic mass changes the energy loss results. Our analysis indicates a fundamental constraint on magnetic to electric mass ratio.