Renormalization of Fermion-Flavour Mixing

Abstract

We report on an explicit on-shell framework to renormalize the fermion-flavour mixing matrices in the Standard Model and its extensions, at one-loop level. It is based on a novel procedure to separate the external-leg mixing corrections into gauge-independent self-mass and gauge-dependent wave-function renormalization contributions.

Comments: to appear in Proceedings of Lepton-Photon 2009, Hamburg, Germany