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arXiv · 0806.0954

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

Rolf Baier·Yacine Mehtar-Tani
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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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Rolf Baier, Yacine Mehtar-Tani. 2008-06-05. Jet quenching and broadening: the transport coefficient $\hat{q}$ in an anisotropic plasma. https://doi.org/10.1103/physrevc.78.064906

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