The full angle-dependent jet-medium collision kernel is extracted from QCD kinetic theory for the pre-equilibrium plasma, revealing strong early-time anisotropy and up to 300% error in the isotropic splitting rates used in current simulations.
Medium-induced parton splitting in expanding QCD matter
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abstract
Using the approach derived by Caron-Huot and Gale from the BDMPS-Z formalism, we obtain medium-induced parton splitting rates in a Bjorken expanding QCD matter. We compare the rate with the case of a static medium and investigate the impact of the medium expansion on the splitting rate. We also consider the leading order in the opacity expansion and the harmonic oscillator solution. These approximations are recovered in the limits of small and large formation times, respectively.
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Jet broadening and radiation in the early anisotropic plasma in heavy-ion collisions
The full angle-dependent jet-medium collision kernel is extracted from QCD kinetic theory for the pre-equilibrium plasma, revealing strong early-time anisotropy and up to 300% error in the isotropic splitting rates used in current simulations.