Di-Jet Conical Correlations Associated with Heavy Quark Jets in anti--de Sitter Space/Conformal Field Theory Correspondence

TL;DR

This paper investigates the angular correlations of heavy quark jets in a strongly-coupled plasma using AdS/CFT, finding that observable conical correlations depend on nonequilibrium effects near the jet, which can be tested experimentally.

Contribution

It demonstrates that conical correlations from holographic models are suppressed in the supergravity limit but can arise from nonequilibrium effects near the jet, offering a new way to test AdS/CFT predictions.

Findings

No conical correlations from far zone Mach and diffusion wakes in supergravity limit.

A nonequilibrium 'neck' zone produces a velocity-independent sonic boom.

Experimental velocity dependence of correlations can test AdS/CFT dynamics.

Abstract

We show that far zone Mach and diffusion wake ``holograms'' produced by supersonic strings in anti--de Sitter space/conformal field theory (AdS/CFT) correspondence 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 {\em nonequilibrium} ``neck'' zone near the jet is shown to produce an apparent sonic boom azimuthal angle distribution that is roughly independent of the heavy quark's velocity. Our results indicate that a measurement of the dependence of the away-side correlations on the velocity of associated identified heavy quark jets at the BNL Relativistic Heavy Ion Collider and CERN LHC will provide a direct test of the nonperturbative dynamics involved in the coupling between jets and the strongly-coupled Quark-Gluon Plasma (sQGP) implied by AdS/CFT correspondence.