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Back-to-back correlations of high-p(T) hadrons in relativistic heavy-ion collisions
Tetsufumi Hirano1, Yasushi Nara
1Physics Department, University of Tokyo, Tokyo 113-0033, Japan.
Abstract:
We investigate the suppression factor and the azimuthal correlation function for high p(T) hadrons in central Au+Au collisions at sqrt[s(NN)]=200 GeV by using a dynamical model in which hydrodynamics is combined with explicitly traveling jets. We study the effects of parton energy loss in a hot medium, intrinsic k(T) of partons in a nucleus, and p (perpendicular) broadening of jets on the back-to-back correlations of high p(T) hadrons. Parton energy loss is found to be a dominant effect on the reduction of the awayside peaks in the correlation function.
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