Abstract
We report measurements of jet quenching in Au+Au collisions at sNN=200 GeV, based on the semi-inclusive distribution of reconstructed charged particle jets recoiling from a high pT hadron trigger. Jets are reconstructed with the anti-kT algorithm (R = 0.2 to 0.5), with low IR-cutoff of track constituents (pT>0.2 GeV/c). Uncorrelated background is corrected using a novel mixed-event technique, with no fragmentation bias imposed by the correction procedure on the accepted recoil jet population. Corrected recoil jet distributions, reported in the range 0<pT,jetch<30 GeV/c, are used to measure jet yield suppression, jet energy loss, and intra-jet broadening. The first search for QCD Molière scattering of jets in hot QCD matter at RHIC is reported.
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