6533b82afe1ef96bd128c3e3
RESEARCH PRODUCT
An A4 model for lepton masses and mixings
Stefano MorisiEduardo Peinadosubject
PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsDimension (graph theory)High Energy Physics::PhenomenologyYukawa potentialFOS: Physical sciencesWeinberg angle7. Clean energy01 natural sciencesStandard ModelHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Irreducible representation0103 physical sciencesHiggs bosonHigh Energy Physics::Experiment010306 general physicsNeutrino oscillationParticle Physics - PhenomenologyLeptondescription
We study an extension of the standard model based on the flavor symmetry A(4) only. Neutrino Majorana mass terms arise from a dimension five operator and charged lepton masses from renormalizable Yukawa couplings. We introduce three Higgs doublets that belong to one triplet irreducible representation of A(4). We study the most general A(4)-invariant scalar potential and the phenomenological consequences of the model. We find that the reactor angle could be as large as sin(2)theta(13max)similar to 0.03, while the atmospheric mixing angle theta(23) is close to maximal, sin(2)theta(23)=1/2.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-12-28 |