Jet-medium interactions at Quark Matter 09 Original Research Article

The suppression of the yield of high transverse momentum pT hadrons in heavy-ion collisions, referred to as “jet-quenching”, has now developed into a comprehensive science. Jets are now used as probes of a variety of properties of the dense medium through which they propagate. Major theoretical improvements include jet modification in a 3-D fluid dynamical medium, the first set of in-medium Monte-Carlo implementations, an understanding of multi-hadron observables and energy flow within perturbative QCD, along with improvements in the AdS/CFT description of energy loss. On the experimental side, high statistics data are allowing for the first discriminatory test of various theoretical models and approximations while the new measurements of full jet reconstruction pose a challenge to theory.