Overview of charm production at RHIC

Abstract

In this presentation, I discuss (a) the charm total cross-section and its comparisons to measurements at other beam energies and pQCD calculations; (b) the semileptonic decay of charm hadrons and the sensitivity of non-photonic leptons to charm quark collective flow and freeze-out; (c) semileptonic decayed electron spectrum at high transverse momentum, its comparison to FONLL in p+p and d+Au collisions and heavy-quark energy loss in Au+Au collisions.