6533b85ffe1ef96bd12c134a
RESEARCH PRODUCT
Neutrino masses and mixing in A(4) models with three Higgs doublets
R. Gonzalez FelipeJoão P. SilvaHugo Serôdiosubject
PhysicsNuclear and High Energy PhysicsSterile neutrinoParticle physicsNeutrino theory of light010308 nuclear & particles physicsPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologyNon-conservationFOS: Physical sciencesFísicasymmetries01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometry0103 physical sciencesMeasurements of neutrino speedHigh Energy Physics::ExperimentNeutrino010306 general physicsNeutrino oscillationNon-ConservationLeptonSymmetriesdescription
We study neutrino masses and mixing in the context of flavor models with A(4) symmetry, three scalar doublets in the triplet representation, and three lepton families. We show that there is no representation assignment that yields a dimension-5 mass operator consistent with experiment. We then consider a type-I seesaw with three heavy right-handed neutrinos, explaining in detail why it fails, and allowing us to show that agreement with the present neutrino oscillation data can be recovered with the inclusion of dimension-3 heavy neutrino mass terms that break softly the A(4) symmetry.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-07-10 |