Contribution of Collapsars and Hypernovae to the origin and early evolution of heavy element explosive nucleosynthesis

   In spite of years of effort many aspects of the origin and evolution of heavy elements in nature are yet to be understood.  In this talk we will summarize the current status of models for both the formation of r-process nucleosynthesis and the p-process.  We describe state-of the art developments of supernova and binary neutron star evolution in both the r-process and p-process nucleosynthesis.  In particular, we will highlight the emerging evidence for the important role of hypernovae (energetic supernovae) and collapsars(jets from the collapse of massive stars to a black hole).  We highlight how these events  may play a key role  in the origin and early evolution of explosive heavy-element nucleosynthesis.