Probing Color Response - Wakes in a Color Plasma

Details Probing Color Response - Wakes in a Color Plasma Probing Color Response - Wakes in a Color Plasma

2005-06-30

arxiv.org/abs/hep-ph/0506328v1

J.Phys.Conf.Ser. 27 (2005) 217-225

Physics

High Energy Physics

High Energy Physics - Phenomenology

Prepared for: Workshop on Correlations and Fluctuations in Relativistic Nuclear Collisions, MIT, Cambridge, Massachusetts, USA

Scientific paper

10.1088/1742-6596/27/1/023

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 $\Delta\phi=\pi \pm 1.1$.

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