Seminar in Hadronic Physics

Parton propagation in dense nuclear matter

Ivan Vitev

Los Alamos National Laboratory

Moderate and high transverse momentum particle production in relativistic heavy ion collisions requires a consistent framework in which nuclear many body effects can both be systematically evaluated and incorporated. Such framework is provided by the perturbatibe QCD factorization approach. I will discuss the derivation and implementation of the QGP induced radiative energy loss in view of the recent Au+Au Cu+Cu on single inclusive particle production and back-to-back two particle correlations. In cold nuclear matter I will show how coherent final state scattering reduces the inclusive deep inelastic scattering and hadron production cross sections. Nuclear enhanced power corrections can explain all of the observed shadowing in the DIS structure functions and part of the observed suppression in d+Au reactions at forward rapidities at RHIC.