On the Viability of Minimal Neutrinophilic Two-Higgs-Doublet Models

Abstract

We study the constraints that electroweak precision data can impose, after the discovery of the Higgs boson by the LHC, on neutrinophilic two-Higgs-doublet models which comprise one extra $SU(2)\times U(1)$ doublet and a new symmetry, namely a spontaneously broken ${\mathbb{Z}}_2$ or a softly broken global $U(1)$. In these models the extra Higgs doublet, via its very small vacuum expectation value, is the sole responsible for neutrino masses. We find that the model with a ${\mathbb{Z}}_2$ symmetry is basically ruled out by electroweak precision data, even if the model is slightly extended to include extra right-handed neutrinos, due to the presence of a very light scalar. While the other model is still perfectly viable, the parameter space is considerably constrained by current data, specially by the $T$ parameter. In particular, the new charged and neutral scalars must have very similar masses.

22 pages, 3 figures, references and comments added, conclusions unchanged, matches version to appear in JHEP

References in corpus (15)

• Big-Bang Nucleosynthesis
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• The oblique parameters in multi-Higgs-doublet models
• A precision constraint on multi-Higgs-doublet models
• Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U
• Limiting two-Higgs-doublet models
• A New Two Higgs Doublet Model
• Light Higgs bosons in Two-Higgs-Doublet Models
• Loop level constraints on Seesaw neutrino mixing
• LHC phenomenology of a two-Higgs-doublet neutrino mass model
• Large invisible decay of a Higgs boson to neutrinos
• Phenomenology in supersymmetric neutrinophilic Higgs model with sneutrino dark matter

Cited by in corpus (16)

• Building and testing models with extended Higgs sectors
• Revisiting Neutrino Self-Interaction Constraints from $Z$ and $\tau$ decays
• Bounds on Neutrino-Scalar Yukawa Coupling
• Naturally Small Dirac Neutrino Mass with Intermediate $SU(2{)}_L$ Multiplet Fields
• Limits on Neutrinophilic Two-Higgs-Doublet Models from Flavor Physics
• Global $U(1{)}_L$ Breaking in Neutrinophilic 2HDM: From LHC Signatures to X-Ray Line
• Hunting for Heavy Majorana Neutrinos with Lepton Number Violating Signatures at LHC
• Hidden $U(1)$ gauge symmetry realizing a neutrinophilic two-Higgs-doublet model with dark matter
• Leptogenesis and Dark Matter from Low Scale Seesaw
• Probing Light Mediators in the Radiative Emission of Neutrino Pair
• Effective neutrino number shift from keV-vacuum neutrinophilic 2HDM
• Baryogenesis from Hierarchical Dirac Neutrinos
• Neutrino Flavor Transformations from New Short-Range Forces
• Explaining Fermions Mass and Mixing Hierarchies through $U(1{)}_X$ and $Z_2$ Symmetries
• Sterile neutrino dark matter from a TeV Scale Seesaw
• Phenomenology of the Sterile Neutrinos