Jet quenching and broadening: the transport coefficient $\hat{q}$ in an anisotropic plasma

Abstract

The jet quenching parameter $\hat{q}$ is analyzed for a quark jet propagating in an anisotropic plasma. The momentum anisotropy is calculated at high temperature of the underlying quark-gluon plasma. $\hat{q}$ is explicitly estimated in leading-logarithmic approximation by the broadening of the massless quark interacting via gluon exchange. A plasma instability is present. Strong indications are found that $\hat{q}$ is increasing with increasing anisotropy. Possible implications for the saturation scale $Q_s$ in $A-A$ collisions are pointed out.

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References in corpus (5)

• The heavy-quark potential in an anisotropic plasma
• Jet broadening in unstable non-Abelian plasmas
• QGP collective effects and jet transport
• Heavy Ion Physics at RHIC
• Quasiparticle description of the hot and dense quark-gluon plasma

Cited by in corpus (5)

• Quarkonium states in an anisotropic QCD plasma
• The sound produced by a fast parton in the quark-gluon plasma is a "crescendo"
• High-energy gluon bremsstrahlung in a finite medium: harmonic oscillator versus single scattering approximation
• On the imaginary part of the next-to-leading-order static gluon self-energy in an anisotropic plasma
• Hard loop effective theory of the (anisotropic) quark gluon plasma