Towards understanding thermal jet quenching via lattice simulations

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After reviewing how simulations employing classical lattice gauge theory permit to test a conjectured Euclideanization property of a light-cone Wilson loop in a thermal non-Abelian plasma, we show how Euclidean data can in turn be used to estimate the transverse collision kernel, C(kₚerp), characterizing the broadening of a high-energy jet. First results, based on data produced recently by Panero et al, suggest that C(kₚerp) is enhanced over the known NLO result in a soft regime kₚerp < a few T. The shape of kₚerp³ C(kₚerp) is consistent with a Gaussian at small kₚerp.