Speaker
Description
Fully exploiting the precision of current and future collider measurements requires theory predictions of matching accuracy, and hence observables computed at next-to-leading order (NLO) and beyond. For any Beyond-the-Standard-Model scenario, such higher-order calculations require a complete and consistent renormalization of the model. We address this task for the general Two-Higgs-Doublet Model (THDM), a well-motivated extension that enlarges the scalar sector to five physical states with a rich collider phenomenology. Whereas existing NLO calculations have focused almost exclusively on symmetry-constrained versions, we consider the most general THDM, which encodes all constrained types as special cases and can act as an effective field theory of many UV-complete models. We introduce our choice of physical input parameters and renormalization conditions, and, using Higgs-to-Higgs and Higgs-to-fermion decays at NLO as example processes, discuss criteria for selecting renormalization schemes with fast perturbative convergence.