Neutrinophilic two Higgs doublet model with $U(1)$ global symmetry

Abstract

We propose a neutrinophilic two-Higgs-doublet model, where the vacuum expectation value (VEV) of the second Higgs doublet is only induced at one-loop level via several neutral fermions. Thus, the masses of active neutrinos arising from the Higgs doublets are naturally small via such a tiny VEV. We discuss various phenomenology of the model, including the neutrino masses and oscillations, bounds on non-unitarity, lepton-flavor violations, the oblique parameters, the muon anomalous magnetic moment, the GeV-scale sterile neutrino candidate arising from the tiny VEV, and collider signatures. We finally discuss the possibility of detecting the sterile neutrino suggested in the experiment of Future Circular Collider (FCC).

20 pages, 3 figure, 2 tables; reference added; figures and discussions are added

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• Neutrino oscillations refitted
• A Three-Loop Neutrino Model with Global $U(1)$ Symmetry
• Loop suppressed light fermion masses with $U(1{)}_R$ gauge symmetry
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Cited by in corpus (3)

• Neutrino Masses in a Two Higgs Doublet Model with a U(1) Gauge Symmetry
• An inverse seesaw model with global $U(1{)}_H$ symmetry
• A generalized one-loop neutrino mass model with charged particles