Analysis of an extended scalar sector with $S_3$ symmetry

Abstract

We investigate the scalar potential of a general $S_3$-symmetric three-Higgs-doublet model. The outcome of our analysis does not depend on the fermionic sector of the model. We identify a decoupling limit for the scalar spectrum of this scenario. In view of the recent LHC Higgs data, we show our numerical results only in the decoupling limit. Unitarity and stability of the scalar potential demand that many new scalars must be lurking below 1 TeV. We provide numerical predictions for $h\to \gamma \gamma$ and $h\to Z\gamma$ signal strengths which can be used to falsify the theory.

One Eq. added, minor changes in figures and subsequent texts, version accepted in Phys. Rev. D, appendix included in the arXiv version

References in corpus (12)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Lepton masses, mixings and FCNC in a minimal S_3-invariant extension of the Standard Model
• S_3 Symmetry and Neutrino Masses and Mixings
• The $S_3$ flavour symmetry: Neutrino masses and mixings
• Exotic Higgs boson decay modes as a harbinger of $S_3$ flavor symmetry
• Consequences of Approximate $S_3$ Symmetry of the Neutrino Mass Matrix
• Broken S3 Symmetry in the Neutrino Mass Matrix and Non-Zero theta_{13}
• Novel signatures of the Higgs sector from S3 flavor symmetry
• Broken $S_3$ Symmetry in Flavor Physics
• Quark/lepton mass and mixing in S_3 invariant model and CP-violation of neutrino
• Non-vanishing $U_{e3}$ under $S_3$ symmetry

Cited by in corpus (4)

• Symmetry breaking patterns in 3HDM
• Nondecoupling of charged scalars in Higgs decay to two photons and symmetries of the scalar potential
• Constraints on Parameter Space from Perturbative Unitarity in Models with Three Scalar Doublets
• A Three Doublet Lepton-Specific Model