Jet broadening in unstable non-Abelian plasmas

Details Jet broadening in unstable non-Abelian plasmas Jet broadening in unstable non-Abelian plasmas

2007-10-05

arxiv.org/abs/0710.1223v3

Phys.Rev.C78:024909,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 7 figures, version accepted for publication in Phys.Rev.C, typos fixed, more detailed discussion of q-hat

Scientific paper

10.1103/PhysRevC.78.024909

We perform numerical simulations of the QCD Boltzmann-Vlasov equation including both hard elastic particle collisions and soft interactions mediated by classical Yang-Mills fields. We provide an estimate of the coupling of jets to a hot plasma which is independent of infrared cutoffs. For weakly-coupled anisotropic plasmas the local rotational symmetry in momentum space is broken. The fields develop unstable modes, forming configurations where B_t>E_t and E_z>B_z. This provides a possible explanation for the experimental observation that high-energy jets traversing the plasma perpendicular to the beam axis experience much stronger broadening in rapidity than in azimuth.

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