The Sound Edge of the Quenching Jets
Edward Shuryak, Pilar Staig

TL;DR
This paper investigates the shape and observable effects of the 'sound edge' created by jets depositing energy in a quark-gluon plasma, proposing it as a new tool to study jet quenching geometry.
Contribution
It provides a semi-analytical study of the 'sound surface' shape in various geometries and suggests observable signatures in particle distributions related to jet quenching.
Findings
The 'sound surface' forms an elliptic curve in azimuthal and pseudorapidity coordinates.
For large energy deposition (~100 GeV), the event may split into two sub-events with modified flow.
The 'jet edge' effect could be observable at transverse momenta around 3 GeV.
Abstract
When quenching jets deposit certain amount of energy and momentum into ambient matter, part of it propagates in the form of shocks/sounds. The "sound surface", separating disturbed and undisturbed parts of the fireball, makes what we call the sound edge of jets. In this work we semi-analytically study its shape, in various geometries. We further argue that since hadrons with in the kinematical range of originate mostly from the "rim" of the fireball, near the maximum of the radial flow at the freezeout surface, only the intersection of the "sound surface" with this "rim" would be observable. The resulting "jet edge" has a form of extra matter at the elliptic curve, in coordinates, with radius . In the case of large energy/momentum deposition we argue that the event should be…
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