Jet energy loss and Mach cones in pQCD vs. AdS/CFT

  • We compare away-side hadron correlations with respect to tagged heavy quark jets computed within a weakly coupled pQCD and a strongly coupled AdS/CFT model. While both models feature similar far zone Mach and diffusion wakes, the far zone stress features are shown to be too weak to survive thermal broadening at hadron freeze-out. Observable away-side conical correlations are dominated by the jet-induced transverse flow in near zone “Neck” region, which differs significantly for both models. Unlike in AdS/CFT, the induced transverse flow in the Neck zone is too weak in pQCD to produce conical correlations after Cooper-Frye freeze-out. The observation of conical correlations violating Mach’s law would favor the strongly-coupled AdS/CFT string drag dynamics, while their absence would favor weakly-coupled pQCD-based hydrodynamics.

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Metadaten
Author:Barbara Betz, Jorge Noronha, Miklos Gyulassy, Giorgio Torrieri
URN:urn:nbn:de:hebis:30-71927
ArXiv Id:http://arxiv.org/abs/abs/0812.1905v1
Parent Title (German):8th Conference Quark Confinement and the Hadron Spectrum September 1-6, 2008 Mainz. Germany
Document Type:Conference Proceeding
Language:English
Date of Publication (online):2009/10/27
Year of first Publication:2008
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2009/10/27
Note:
Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Source:http://arxiv.org/abs/0812.1905v1 ; 8th Conference Quark Confinement and the Hadron Spectrum September 1-6, 2008 Mainz. Germany
HeBIS-PPN:219882819
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht