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A_4 Symmetry and Neutrinos with Very Different Masses
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The A_4 model of leptons was proposed originally for nearly degenerate neutrino masses. With minimal modification, it is shown to accommodate as well the cases of normal hierarchy and inverted hierarchy. In all cases, this new model predicts sin^2 2 theta_{atm} = 1 and tan^2 theta_{sol} = 0.5 for U_{e3} = 0. It also predicts their deviations from 1 and 0.5 respectively for U_{e3} not equal to zero.
Forward citations
Cited by 2 Pith papers
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Two-sector leptogenesis in a two-Higgs-doublet model with spontaneous CP violation
The paper proposes an A4-flavored two-Higgs-doublet model with two-sector leptogenesis and reports that a few-GeV dark fermion gives ΩDM/Ωb ~ 5 for M1 ~ 10^10 GeV.
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The Triadic Texture: Neutrino Predictions, Viable Vacuum, and Phenomenological Constraints
A new neutrino mass matrix texture under A4 x multiple Z symmetries predicts normal hierarchy, theta23 octant, and bounds on phases and masses in a seesaw model.
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