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

Barbara Betz, Jorge Noronha, Miklos Gyulassy, Giorgio Torrieri

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - Jan 1 2008
Externally publishedYes
Event8th Conference Quark Confinement and the Hadron Spectrum, Confinement 2008 - Mainz, Germany
Duration: Sep 1 2008Sep 6 2008

ASJC Scopus subject areas

  • General


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