Parton energy loss due to synchrotron-like gluon emission

TL;DR

This paper develops a quasiclassical theory for synchrotron-like gluon radiation, suggesting it could significantly contribute to parton energy loss in jet quenching if strong chromomagnetic fields are present, and highlights disagreements with previous models.

Contribution

It introduces a new quasiclassical framework for gluon radiation and explores its implications for jet quenching, contrasting with prior Schwinger-based approaches.

Findings

Gluon spectrum differs from previous Schwinger method results.

Parton energy loss may be significant in strong chromomagnetic fields.

Synchrotron-like gluon emission could impact jet quenching phenomena.

Abstract

We develop a quasiclassical theory of the synchrotron-like gluon radiation. Our calculations show that the parton energy loss due to the synchrotron gluon emission may be important in the jet quenching phenomenon if the plasma instabilities generate a sufficiently strong chromomagnetic field. Our gluon spectrum disagrees with that obtained by Shuryak and Zahed within the Schwinger's proper time method.