Separating hard and soft scales in hard processes in a QCD plasma

Abstract

We present a picture of hard processes in a hot plasma in terms of the hard scale part of the process, where perturbative QCD should be applicable, and the soft scale part of the process, where we look to the AdS/CFT correspondence for guidance to possible strong effective coupling phenomena. In particular we estimate $\hat{q}$, the transport coefficient, supposing that at soft scales partons in the plasma all cascade to small-$x$-values as indicated by strong coupling SYM theory.

8 pages

References in corpus (7)

• Energy loss of a heavy quark moving through N=4 supersymmetric Yang-Mills plasma
• Drag force in AdS/CFT
• Wilson loops in heavy ion collisions and their calculation in AdS/CFT
• Jet evolution in the N=4 SYM plasma at strong coupling
• Comparing energy loss and $p_{\perp }$-broadening in perturbative QCD with strong coupling $\mathcal{N}=4$ SYM theory
• Deep inelastic scattering off a N=4 SYM plasma at strong coupling
• Jet fragmentation and gauge/string duality

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• Inelastic processes in DIS and N=4 SYM
• Partons and jets in a strongly-coupled plasma from AdS/CFT
• Soft interaction at high energy and N=4 SYM
• D-instantons and multiparticle production in N=4 SYM
• Jet Propagation and Mach-Cone Formation in (3+1)-dimensional Ideal Hydrodynamics
• Heavy-quark energy loss in pQCD and SYM plasmas
• Parton energy loss at strong coupling and the universal bound
• On the Nuclear Modification Factor at RHIC and LHC
• Mach-like Angular Correlations Arise Only From the Head Zone of AdS/CFT String Jets
• Partons and jets at strong coupling from AdS/CFT