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arXiv · hep-ph/0506328

Probing Color Response - Wakes in a Color Plasma

Jörg Ruppert
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Abstract

The wake induced in a hot QCD medium by a high momentum parton (jet precursor) is calculated in the framework of linear response theory. Two different scenarios are discussed: a weakly coupled quark gluon plasma (pQGP) as described by hard-thermal loop (HTL) perturbation theory and a strongly cupled QGP (sQGP) with the properties of a quantum liquid. In the latter case the wake could exhibit a pronounced Mach cone structure. This physical mechanism could be important for the understanding of preliminary data from the PHENIX and STAR experiments at RHIC on the angular distribution of low-pt secondaries stemming from the away-side jet which indicate maxima at $Δϕ=π\pm 1.1$.

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Jörg Ruppert. 2005-06-30. Probing Color Response - Wakes in a Color Plasma. https://doi.org/10.1088/1742-6596%2F27%2F1%2F023

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