2013/07/19 by Edward Shuryak, Pilar Staig · 1 citation
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Event (particle physics) #Geometry #Hadron #High-Energy Particle Collisions Research #Intersection (aeronautics) #Jet (fluid) #Jet quenching #Mechanics #Momentum (technical analysis) #Nuclear physics #Observable #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Quark–gluon plasma #RADIUS #Range (aeronautics) #Surface (topology) #nucl-th
paper · pdf · doi:10.1103/physrevc.88.054903
published as Phys. Rev. C 88, 054903 (2013) · v2 has reduced discussion of current phenomenology
arxiv created 2013/07/19 · openalex publication_date 2013/11/22 · arxiv updated 2013/11/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
When quenching jets deposit certain amounts 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 semianalytically study its shape, in various geometries. We further argue that since hadrons with in the kinematical range of p_\ensuremath⊥\ensuremath∼2\phantom\rule0.16em0ex\phantom\rule4pt0exGeV originate mostly from the ``rim'' of the fireball, near the maximum of the radial flow at the freeze-out 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 \ensuremathΔ\ensuremathφ,\ensuremathΔ\ensuremathη coordinates, with radius |\ensuremathΔ\ensuremathφ|\ensuremath∼|\ensuremathΔ\ensuremathη|\ensuremath∼1. In the case of large energy/momentum deposition \ensuremath∼100\phantom\rule0.16em0ex\phantom\rule4pt0exGeV we argue that the event should be considered as two subevents, with the interior of the ``sound surface'' having modified radial and directed flow. We further argue that in the kinematical range of p_\ensuremath⊥\ensuremath∼3\phantom\rule0.16em0ex\phantom\rule4pt0exGeV the effect of that can be large enough to be seen on an event-by-event basis. If so, this effect has the potential to become a valuable tool to address the geometry of jet production and quenching.