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Dirac neutrinos from flavor symmetry

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arxiv 1307.3553 v3 pith:7R5E33EQ submitted 2013-07-12 hep-ph

Dirac neutrinos from flavor symmetry

classification hep-ph
keywords neutrinomassdiracfermionsflavormodelneutrinossymmetry
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a model where Majorana neutrino mass terms are forbidden by the flavor symmetry group Delta(27). Neutrinos are Dirac fermions and their masses arise in the same way as that of the charged fermions, due to very small Yukawa couplings. The model fits current neutrino oscillation data and correlates the octant of the atmospheric angle with the magnitude of the lightest neutrino mass, with maximal mixing excluded for any neutrino mass

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