Speaker
Prof.
Davison Soper
(University of Oregon)
Description
For constructing the subtraction terms for the calculation of infrared safe observables or for constructing the splitting functions for a parton shower beyond leading order, one needs to understand the infrared behavior of loop diagrams. For this purpose, the choice of gauge matters. I will describe the interpolating gauge of Doust (1987) and Baulieu and Zwanziger (1999). This gauge interpolates between Feynman gauge and Coulomb gauge. I will argue that it may be useful for algorithms for perturbative subtractions or parton showers because of the way that it organizes collinear singularities.
Authors
Prof.
Davison Soper
(University of Oregon)
Dr
Zoltan Nagy
(DESY -Hamburg)
