[en] We investigate the suppression factor and the azimuthal correlation function for high p_T hadrons in central Au+Au collisions at √s_NN=200 GeV by using a dynamical model in which hydrodynamics is combined with explicitly traversing jets. We study the effects of parton energy loss in a hot medium, intrinsic k_T of partons in a nucleus, and p sub(perpendicular) broadening of jets on the back-to-back correlations of high p_T hadrons. All these effects are found to be responsible for the disappearance of the away-side peaks in correlation functions. (author)