Jet quenching from the lattice
arXiv:1407.2963 · doi:10.1016/j.nuclphysa.2014.07.037
Abstract
We present a lattice study of the momentum broadening experienced by a hard parton in the quark-gluon plasma. In particular, the contributions to this real-time phenomenon from soft modes are extracted from a set of gauge-invariant operators in a dimensionally reduced effective theory (electrostatic QCD), which can be simulated on a Euclidean lattice. At the temperatures accessible to present experiments, the soft contributions to the jet quenching parameter are found to be quite large. We compare our results to phenomenological models and to holographic computations.
arXiv comment4 pages, 2 figures, talk presented at the XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions "Quark Matter 2014" (19-24 May 2014, Darmstadt, Germany)
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