Disappearance of the Mach Cone in heavy ion collisions

Abstract

We present an analysis of di-hadron correlations using recently developed methods for background subtraction which allow for higher precision measurements with fewer assumptions about the background. These studies indicate that low momentum jets interacting with the medium do not equilibrate with the medium, but rather that interactions with the medium lead to more subtle increases in their widths and fragmentation functions, consistent with observations from studies of higher momentum fully reconstructed jets. The away-side shape is not consistent with a Mach cone.

References in corpus (9)

• PYTHIA 6.4 Physics and Manual
• Dihadron azimuthal correlations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV
• Measurement of jet fragmentation in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
• Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV with the ATLAS detector
• Indications of Conical Emission of Charged Hadrons at the BNL Relativistic Heavy Ion Collider
• Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at sqrt(s_NN)=200 GeV: Jet-quenching and the response of partonic matter
• System Size and Energy Dependence of Jet-Induced Hadron Pair Correlation Shapes in Cu+Cu and Au+Au Collisions at sqrt(s_NN) = 200 and 62.4 GeV
• Event-plane dependent dihadron correlations with harmonic $v_n$ subtraction in Au+Au Collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV

Cited by in corpus (3)

• Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media
• Event-plane dependent di-hadron correlations with harmonic $v_n$ subtraction in a hydrodynamic model
• Fluidity of the system produced in relativistic pp and heavy-ion collisions: Hadron resonance gas model approach