Thursday, April 11, 2013

1304.2852 (Takahito Todoroki for the PHENIX Collaboration)

Two particle correlation measurements with respect to higher harmonic
event planes at PHENIX

Takahito Todoroki for the PHENIX Collaboration
Measurements of two particle azimuthal correlations in relativistic heavy ion collisions provide information of the possible interplay between hard-scattered partons and the hot-dense medium. Toward an understanding of parton-medium coupling, it is indispensable to obtain correlations where contributions from higher harmonic flow($v_n$) are rejected. It is also important to produce correlation measurements where the trigger particle is selected relative to second and third order event planes. This enables us to explore path-length dependence of parton energy loss and the influence of the medium on the jets. We present the latest PHENIX results of correlations in which contributions from higher harmonic flow have been subtracted, as well as second and third order event plane-dependent correlations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV.
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