II. Institut für Theoretische Physik, Universit?t Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

摘要

The PHENIX Experiment at RHIC has measured charmonium production using dileptons and open heavy flavor production via semileptonic decays in p + p, d + Au, and Au + Au collisions at = 200 GeV. A nuclear dependence affecting J/ production in d + Au collisions is observed. For electrons from heavy flavor decay in Au + Au collisions, the transverse momentum spectrum is observed to be strongly modified compared to scaled results from p + p collisions. An initial measurement of the azimuthal anisotropy parameter, v2, for such electrons is reported.