Towards automatizing Higgs decays in BSM models at one-loop in the decoupling renormalization scheme

Abstract

We propose the use of a decoupling renormalization scheme in the calculation of NLO corrections to SM-like Higgs boson decays in the beyond the Standard Model models. The advantage of this particular scheme is its decoupling property in the presence of a heavy BSM physics and the possibility to directly include known higher-order Standard Model corrections. We illustrate the use of this scheme by analysing the $h \to \mu^+ \mu^-$ decay in a simple Standard Model extension by an $S_1$ leptoquark.