Infrared divergences and non-lightlike eikonal lines in Sudakov processes
Authors
J. C. Collins, F. Hautmann
Abstract
We propose a method to analyze infrared contributions to non-inclusive processes in QCD. We use the one-loop Sudakov form factor as a working example. Borrowing techniques from renormalization theory, we construct counterterms for the contributions from the soft and collinear regions, and we relate them to eikonal Wilson lines taken along non-lightlike directions.
