Azimuthal jet tomography at RHIC and LHC

2014/07/28 by Barbara Betz, Miklos Gyulassy, Miklós Gyulassy
Engineering · Physics and Astronomy · #Astronomy #Azimuth #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Mechanics #Nuclear physics #Nuclear reactor physics and engineering #Optics #Particle physics theoretical and experimental studies #Physics #Tomography #hep-ex #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.nuclphysa.2014.08.109

4 pages, 4 figures, proceedings of the Quark Matter 2014 conference

arxiv created 2014/07/28 · openalex publication_date 2014/09/02 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Results based on a generic jet-energy loss model that interpolates between running coupling pQCD-based and AdS/CFT-inspired holographic prescriptions are compared to recent data on the high-p_T pion nuclear modification factor and the high-p_T elliptic flow in nuclear collisions at RHIC and LHC. The jet-energy loss model is coupled to various (2+1)d (viscous hydrodynamic) fields. The impact of energy-loss fluctuations is discussed. While a previously proposed AdS/CFT jet-energy loss model with a temperature-independent jet-medium coupling is shown to be inconsistent with the LHC data, we find a rather broad class of jet-energy independent energy-loss models dE/dx= κ(T) x^z T^2+z that can account for the current data with different temperature-dependent jet-medium couplings κ(T) and path-length dependence exponents of 0≤ z ≤ 2.

Citations

• Examining a reduced jet-medium coupling in Pb+Pb collisions at the Large Hadron Collider
• Neutral pion production with respect to centrality and reaction plane in Au+Au collisions atsNN=200GeV
• Viscous Hydrodynamic Predictions for Nuclear Collisions at the LHC