Measurement of D0 Meson Production and Azimuthal Anisotropy in Au+Au Collisions at sNN=200Â GeV

In these proceedings, we report measurements of D0 production and elliptic flow (v2 via topological reconstruction using STAR's recently installed Heavy Flavor Tracker (HFT). The new measurement of the nuclear modification factor (RAA) of D0 mesons in central Au+Au collisions at sNN=200 GeV confirms the strong suppression at high transverse momenta (pT) reported in the previous publication with much improved precision. We also report the measurement of elliptic flow for D0 mesons in a wide transverse momentum range in 0-80% minimum-bias Au+Au collisions. The D0 elliptic flow is finite for pT>2 GeV/c and is systematically below that of light hadrons in the same centrality interval. Furthermore, several theoretical calculations are compared to both RAA and v2 measurements, and the charm quark diffusion coefficient is inferred to be between 2 and ∼12.