Speaker
Zhengkang Zhang
(University of Michigan)
Description
Matching a full theory onto an effective field theory by integrating out heavy fields is often useful for connecting low-energy phenomenology to high-scale physics. I introduce a new formulation of one-loop matching in terms of covariant diagrams, which, unlike conventional Feynman diagrams, preserve gauge covariance in intermediate steps and thus simplify calculations. I will show examples of the use of covariant diagrams in computing SUSY threshold corrections, which helps build connection between unification and phenomenology.
Author
Zhengkang Zhang
(University of Michigan)
Co-author
James Daniel Wells
(University of Michigan (US))
