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Vacuum Stability Bounds in the Two-Higgs Doublet Model

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arxiv hep-ph/9811234 v1 pith:HJLZUWPQ submitted 1998-11-03 hep-ph

Shuquan Nie , Marc Sher This is my paper · ORCID
classification hep-ph
keywords modelhiggsdoubletmasstwo-higgsbosonboundbounds
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In the standard model, the requirements of vacuum stability and the validity of perturbation theory up to the unification scale force the mass of the Higgs boson to be approximately between 130 GeV and 180 GeV. We re-examine these requirements in the (non-supersymmetric) two-Higgs doublet model, in the light of the large top quark mass, and constrain the masses of the Higgs bosons in this model. It is found that the mass of the charged Higgs boson must be lighter than 150 GeV. This bound is below the lower bound in the popular model-II two-Higgs doublet model, and thus we conclude that this model cannot be valid up to the unification scale. The bounds on the neutral Higgs scalars are also discussed.

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Cited by 3 Pith papers

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  1. Forbidden neutrinogenesis

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    A neutrinophilic two-Higgs-doublet model with Dirac neutrinos can generate the observed baryon asymmetry through finite-temperature 'forbidden' leptogenesis, favoring normal neutrino mass ordering and 0 < δ_CP < π.

  2. Two Higgs doublet model with a complex singlet scalar and Multi-critical Point Principle

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    A 2HDM extended by a complex singlet uses tree-level MPP to motivate degenerate neutral Higgs masses, yielding viable DM phenomenology and a thermally induced strong first-order electroweak phase transition.

  3. One-loop induced contributions to the rare decay of $A_0 \rightarrow h_0h_0\gamma$ in Two Higgs Doublet Models

    hep-ph 2025-01 conditional novelty 5.0 of 10

    First complete one-loop analytic calculation of A0 -> h0h0 gamma in the CP-conserving two Higgs doublet model, with benchmark decay rates and differential distributions.

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