Scalar sector properties of two-Higgs-doublet models with a global U(1) symmetry

Abstract

We analyze the scalar sector properties of a general class of two-Higgs-doublet models which has a global U(1) symmetry in the quartic terms. We find constraints on the parameters of the potential from the considerations of unitarity of scattering amplitudes, the global stability of the potential and the $\rho$-parameter. We concentrate on the spectrum of the non-standard scalar masses in the decoupling limit which is preferred by the Higgs data at the LHC. We exhibit charged-Higgs induced contributions to the diphoton decay width of the 125\,GeV Higgs boson and its correlation with the corresponding $Z\gamma$ width.

12 pages, 15 eps figure files; minor modifications made and a few references added

References in corpus (13)

• 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
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• A precision constraint on multi-Higgs-doublet models
• Status of the two-Higgs-doublet model of type II
• Searching for Signs of the Second Higgs Doublet
• Heavy Higgs Searches and Constraints on Two Higgs Doublet Models
• Bounds on scalar masses in two Higgs doublet models
• Probing the charged Higgs boson at the LHC in the CP-violating type-II 2HDM
• The global electroweak Standard Model fit after the Higgs discovery
• The CP-violating type-II 2HDM and Charged Higgs boson benchmarks
• 2-photon decay rate of the scalar boson in the Inert Doublet Model
• 125 GeV Higgs bosons in two-Higgs-doublet models

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