Leading and Non-leading Singularities in Gauge Theory Hard Scattering

Abstract

This talk reviewed some classic results and recent progress in the resummation of leading and nonleading enhancements in QCD cross sections and of poles in dimensionally-regularized hard-scattering amplitudes.

Comments: 16 pages, 5 figures, based on a talk presented at Continuous Advances in QCD; William I. Fine Theoretical Physics Institute, University of Minnesota, May 15-18, 2008