Electroweak Sudakov logarithms in the Coulomb gauge
W. Beenakker, A. Werthenbach
Abstract
We describe a formalism for calculating electroweak Sudakov logarithms in the Coulomb gauge. This formalism is applicable to arbitrary electroweak processes. For illustration we focus on the specific reactions e+e- -> f f and e+e- -> WT+WT-, WL+WL-, which contain all the salient details of dealing with the various types of particles. We discuss an explicit two-loop calculation and have a critical look at the (non-)exponentiation and factorisation properties of the Sudakov logarithms in the Standard Model.
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