Nuclear Physics & RIKEN Theory Seminar

"Non-Mach Conical Di-jet Correlations in AdS/CFT"

Presented by Jorge Noronha, Columbia University

Friday, October 10, 2008, 2:00 pm — Small Seminar Room, Bldg. 510

The reported observation of Mach cone-like correlations between tagged (near side) jets fragments and away side associated moderate pT < 4 GeV/c hadrons has generated a lot of interest because it may provide further evidence for fast relaxation times and the near perfect fluid property of the strongly Quark-Gluon Plasma (sQGP) produced in Au+Au reactions at RHIC. In this talk, we show that far zone Mach and Diffusion wake ``holograms'' produced by supersonic strings in AdS/CFT do not lead to observable conical angular correlations in the strict $N_c\to\infty$ supergravity limit if Cooper-Frye hadronization is assumed. However, a special nonequilibrium ``Neck'' zone close to the heavy quark is shown to give rise to an apparent sonic boom azimuthal angle distribution that however does not obey Mach's law. The observation of non-Mach conical correlations associated with tagged heavy quark jets would provide additional support for novel nonperturbative dynamics as suggested by the AdS/CFT string phenomenology.

Hosted by: Gregory Soyez

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