Jet energy loss and bulk parton collectivity in nucleus-nucleus collisions at RHIC

Nucleus-nucleus collisions at RHIC produce high temperature and high energy density matter which exhibits partonic degrees of freedom.We will discuss measurements of nuclear modification factors for light hadrons and non-photonic electrons from heavy quark decays,which reflect the flavor dependence of energy loss of high momentum partons traversing the dense QCD medium.The dense QCD medium responds to energy loss of high momentum partons in a pattern consistent with that expected from a hydrodynamic fluid.T...