Three-particle azimuthal correlations and Mach shocks

Simple item page
dc.creatorRenk, Thorsten
dc.creatorRuppert, Jorg
dc.date2007-02-09
dc.date.accessioned2026-07-07T11:22:37Z
dc.date.available2026-07-07T11:22:37Z
dc.descriptionMeasurements of angular correlations of hadrons with a (semi-)hard trigger hadron in heavy-ion collisions at RHIC show large angular structures opposite to the trigger which were a priori unexpected. These away side large angle correlations were first observed in two-particle correlations and have recently also been investigated in three-particle correlation measurements by the PHENIX and STAR collaborations. We show that the correlation signal can be understood in terms of sonic shockwaves ('Mach cones') excited by hard partons supersonically traversing the medium. The propagation of such shocks through the medium evolution is treated in a Monte Carlo (MC) framework. We demonstrate that two- and especially three-particle correlations offer non-trivial insight into the medium-averaged speed of sound and the evolution of flow. Our findings imply that the assumption of "deflected jets" is not necessary to account for the observed correlations.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0702102
dc.identifierhttp://arxiv.org/abs/hep-ph/0702102
dc.identifierPhys.Rev.C76:014908,2007
dc.identifierdoi:10.1103/PhysRevC.76.014908
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194631
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThree-particle azimuthal correlations and Mach shocks
dc.typetext

Files

Collections

arXiv