Constraining the two-Higgs-doublet-model parameter space

2007/06/20 by Abdul Wahab El Kaffas, P. Osland, Odd Magne Ogreid +2 · 6 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Black Holes and Theoretical Physics #Boson #Cosmology and Gravitation Theories #Higgs boson #Muon #Particle physics #Particle physics theoretical and experimental studies #Physics #Two-Higgs-doublet model #Unitarity #hep-ph

paper · pdf · doi:10.1103/physrevd.76.095001

published as Phys.Rev.D76:095001,2007 · 17 pages, 17 figures

arxiv created 2007/06/20 · openalex publication_date 2007/11/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We confront the two-Higgs-doublet model with a variety of experimental constraints as well as theoretical consistency conditions. The most constraining data are the B\ensuremath→X_s\ensuremathγ decay rate (at low values of M_H^\ifmmode±\else\textpm\fi), and \ensuremathΔ\ensuremathρ (at both low and high M_H^\ifmmode±\else\textpm\fi). We also take into account the BB oscillation rate and R_b, or the width \ensuremathΓ(Z\ensuremath→bb) (both of which restrict the model at low values of tan\ensuremathβ), and the B^\ensuremath-\ensuremath→\ensuremathτ\ensuremathν_\ensuremathτ decay rate, which restricts the model at high tan\ensuremathβ and low M_H^\ifmmode±\else\textpm\fi. Furthermore, the LEP2 nondiscovery of a light, neutral-Higgs boson is considered, as well as the muon anomalous magnetic moment. Since perturbative unitarity excludes high values of tan\ensuremathβ, the model turns out to be very constrained. We outline the remaining allowed regions in the tan\ensuremathβ-M_H^\ifmmode±\else\textpm\fi plane for different values of the masses of the two lightest neutral-Higgs bosons, and describe some of their properties.

Citations

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• Three-Loop Mixing of Dipole Operators
• R ECENT P ROGRESS IN B ARYOGENESIS
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• Probing new physics through B mixing: Status, benchmarks and prospects
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• Weak radiative B-meson decay beyond leading logarithms
• Three‐YearWilkinson Microwave Anisotropy Probe(WMAP) Observations: Implications for Cosmology
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Cited by

• Revisiting B_s → μ ⁺μ ^- B s → μ + μ - in the two-Higgs doublet models with Z₂ Z 2 symmetry
• Higgs pair productions in the CP-violating two-Higgs-doublet model
• Δr in the Two-Higgs-Doublet Model at full one loop level—and beyond
• Minkowski space structure of the Higgs potential in the two-Higgs-doublet model. II. Minima, symmetries, and topology
• Light charged Higgs bosons to AW/HW via top decay
• Probing triple Higgs couplings of the two Higgs doublet model at a linear collider