Precise calculations for decays of Higgs bosons in extended Higgs sectors

Abstract

We briefly introduce H-COUP_3.0, which we developed for evaluating higher-order corrections to any Higgs boson decays in various extended Higgs sectors. Focusing on two Higgs doublet models (2HDMs), we then discuss how the non-decoupling effects of the additional Higgs bosons are significant in Higgs boson decays.

Comments: Proceedings of XXX Cracow Epiphany Conference on Precision Physics at High Energy Colliders, Cracow, Poland, January 8-12, 2024; 11 pages, 2 figures