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Flavour-symmetric type-II Dirac neutrino seesaw mechanism
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We propose a Standard Model extension with underlying A4 flavour symmetry where small Dirac neutrino masses arise from a Type-II seesaw mechanism. The model predicts the "golden" flavour-dependent bottom-tau mass relation, requires an inverted neutrino mass ordering and non-maximal atmospheric mixing angle. Using the latest neutrino oscillation global fit we derive restrictions on the oscillation parameters, such as a correlation between Dirac CP phase and the lightest neutrino mass.
Forward citations
Cited by 2 Pith papers
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Sterile neutrino Dark Matter in the minimal Dirac Seesaw
A minimal Dirac seesaw model yields viable sterile-neutrino dark matter via freeze-in, with the right-handed mixing angle θ_R bypassing X-ray bounds.
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Permuted Charged Lepton Correction in the Framework of Dirac Seesaw
An A4-based Dirac seesaw model produces a solar mixing angle at the edge of the experimental range, but this is driven by a freely scanned parameter.
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