The Sound Edge of the Quenching Jets

Understand

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 $p_\perp\sim 2\, GeV$ 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.