2020/10/31 by P. M. Ferreira, B. Grzadkowski, O. M. Ogreid +1 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1007/jhep02(2021)196
58 pages, 7 figures. JHEP version. References added, clarifications and minor changes made
arxiv created 2021/02/17 · arxiv updated 2021/03/17
Symmetries of the Two-Higgs-Doublet Model (2HDM) potential that can be extended to the whole Lagrangian, i.e. the CP-symmetries CP1, CP2, CP3 and the Higgs-family symmetries Z2, U(1) and SO(3) are discussed. Sufficient and necessary conditions in terms of constraints on masses and physical couplings for the potential to respect each of these symmetries are found. Each symmetry can be realized through several alternative cases, each case being a set of relations among physical parameters. We will show that some of those relations are invariant under the renormalization group, but others are not. The cases corresponding to each symmetry group are illustrated by analyzing the interplay between the potential and the vacuum expectation values.