Speaker
Description
Through tree-level mixing, vector-like leptons (VLL) can have a significant impact on the SM lepton mass generation, Higgs couplings and flavor (violating) observables. Precise predictions of these observables however require calculations beyond leading order, which necessitates the definition of a renormalization scheme.
In this talk, I present such a scheme, implementing on-shell conditions on the self-energies for the first time. I show how loop corrections to the mixing can be treated in a practicable way and discuss the impact of higher order corrections on observables, focusing in particular on the correlation between the g-2 and Higgs coupling of the muon, that serves as an important constraint on the VLL.