Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV

Details Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV

2006-04-26

arxiv.org/abs/nucl-ex/0604018v1

Phys.Rev.Lett.97:162301,2006

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.162301

The STAR Collaboration at RHIC reports measurements of azimuthal correlations of high transverse momentum (p_T) charged hadrons in Au+Au collisions at higher p_T than reported previously. As p_T is increased, a narrow, back-to-back peak emerges above the decreasing background, providing a clear dijet signal for all collision centralities studied. Using these correlations, we perform a systematic study of dijet production and suppression in nuclear collisions, providing new constraints on the mechanisms underlying partonic energy loss in dense matter.

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