Seeing Beauty in the Quark-Gluon Plasma with Energy Correlators

TL;DR

This paper introduces a new energy correlator-based observable to analyze heavy-flavor jets in quark-gluon plasma, aiming to distinguish between dead-cone suppression and medium-induced radiation effects, thereby advancing QGP studies.

Contribution

It proposes a novel observable using energy correlators to disentangle competing effects in heavy-flavor jet radiation patterns within QGP.

Findings

The observable can differentiate dead-cone suppression from medium-induced radiation.

It provides a new method to analyze jet substructure in heavy-ion collisions.

Potential to improve understanding of QGP dynamics with upcoming measurements.

Abstract

Heavy quarks created in heavy-ion collisions serve as an excellent probe of the produced quark-gluon plasma (QGP). The radiation pattern of jets formed from heavy quarks as they traverse the QGP exhibits a particularly interesting structure due to the interplay of two competing effects: the suppression of small-angle radiation, also known as the ``dead-cone'' effect, and the enhancement of emitted gluons by medium-induced radiation. In this Letter, we propose a new observable, based on the energy correlator approach to jet substructure, which will allow us to disentangle the two scales associated to these two phenomena and to determine under which conditions the dead-cone is filled by medium-induced radiation. Combined with the forthcoming high-statistics measurements of heavy-flavor jets, this work provides a novel tool to unravel the dynamics of the QGP.