Constraining the CP4-invariant three-Higgs-doublet model via top quark decays

Abstract

CP4 3HDM is a peculiar three-Higgs-doublet model in which a single symmetry leads to tight constraints on the scalar and Yukawa sectors. In this models, tree-level flavor-changing neutral couplings are unavoidable; however, as previously shown, their contributions to neutral meson oscillations can be suppressed. Here, we explore the remaining quark flavor violating effects, which give rise to the top quark decays to light scalars, including the 125 GeV Higgs boson $h_{SM}$, as well as the magnitude of the $h_{SM}t\bar{t}$ coupling. Utilizing the recently developed scanning procedure, in which observables are used as input, we narrow down the viable options to a unique CP4-invariant Yukawa sector capable of satisfying all meson oscillation and top quark constraints. We present benchmark models that feature neutral or charged Higgs bosons lighter than the top quark, and we look forward to testing them further at the LHC and through flavor physics observables.

arXiv comment25 pages, 6 figures; v2: updated Figs.1 and 2, added minor corrections, matches the published version

References in corpus (40)

• 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
• The oblique parameters in multi-Higgs-doublet models
• Updated Values of Running Quark and Lepton Masses
• Top-Quark Decay at Next-to-Next-to-Leading Order in QCD
• Building and testing models with extended Higgs sectors
• Automorphisms in Gauge Theories and the Definition of CP and P
• Search for a light charged Higgs boson in the decay channel H+->csbar in ttbar events using pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• A 96 GeV Higgs Boson in the N2HDM
• Generalized CP symmetries and special regions of parameter space in the two-Higgs-doublet model
• Search for a light charged Higgs boson decaying to c s-bar in pp collisions at sqrt(s) = 8 TeV
• Abelian symmetries in multi-Higgs-doublet models
• Abelian symmetries in multi-Higgs-doublet models
• A CP-conserving multi-Higgs model without real basis
• Multi-Higgs doublet models: physical parametrization, sum rules and unitarity bounds
• Measurement of the properties of Higgs boson production at $\sqrt{s}=13$ TeV in the $H\to \gamma \gamma$ channel using $139$ fb${}^{-1}$ of $pp$ collision data with the ATLAS experiment
• Search for a charged Higgs boson decaying to charm and bottom quarks in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Light Charged Higgs bosons at the LHC in 2HDMs
• Search for a light charged Higgs boson in the H${}^{\pm }$ $\to$ cs channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Flavor Violation in Supersymmetric Q_6 Model
• Enhanced Di-Higgs Production in the Two Higgs Doublet Model
• Light charged Higgs boson scenario in 3-Higgs doublet models
• CP4 miracle: shaping Yukawa sector with CP symmetry of order four
• Light charged Higgs boson with dominant decay to quarks and its search at LHC and future colliders
• Symmetries and Mass Degeneracies in the Scalar Sector
• Search for flavor-changing neutral current interactions of the top quark and Higgs boson in final states with two photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for a light charged Higgs boson in $t\to H^{\pm }b$ decays, with $H^{\pm }\to cb$, in the lepton+jets final state in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model
• Bounded masses in Two Higgs Doublets Models, Spontaneous CP Violation and ${\mathbb{Z}}_2$ symmetry
• When the C in CP does not matter: anatomy of order-4 CP eigenstates and their Yukawa interactions
• Superposition of CP-Even and CP-Odd Higgs Resonances: Explaining the 95 GeV Excesses within a Two-Higgs Doublet Model
• Multi-Higgs models with CP symmetries of increasingly high order
• Self-cancelation of a scalar in neutral meson mixing and implications for LHC
• Symmetry and decoupling in multi Higgs models
• CP violation in a multi-Higgs doublet model with flavor changing neutral current
• Search for a light charged Higgs boson in $t\to H^{\pm }b$ decays, with $H^{\pm }\to cs$, in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for a new scalar resonance in flavour-changing neutral-current top-quark decays $t\to qX$ ($q=u,c$), with $X\to b\bar{b}$, in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• No strong $CP$ violation up to the one-loop level in a two-Higgs-doublet model
• Limiting FCNC induced by a CP symmetry of order 4
• Tridiagonal scalar mass matrix in the CP4 3HDM and its implications