6533b837fe1ef96bd12a1f27
RESEARCH PRODUCT
Inverse tribimaximal type-III seesaw mechanism and lepton flavor violation
Stefano MorisiJosé W. F. ValleD. Ibanezsubject
PhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyRadiative decayInverseFísicaType (model theory)Particle decaySeesaw mechanismHigh Energy Physics::ExperimentNeutrinoLeptondescription
We present a type-III version of inverse seesaw or, equivalently an inverse version of type-III seesaw. Naturally small neutrino masses arise at low-scale from the exchange of neutral fermions transforming as hyperchargeless SU(2) triplets. In order to implement tri-bimaximal lepton mixing we supplement the minimal SU(3)xSU(2)xU(1) gauge symmetry with an A4-based flavor symmetry. Our scenario induces lepton flavour violating (LFV) three body decays that can proceed at the tree level, while radiative li to lj gamma decays and mu-e conversion in nuclei are also expected to be sizeable. LFV decays are related by the underlying flavor symmetry and the new fermions are also expected to be accessible for study at the Large Hadron Collider (LHC). We thank Martin Hirsch and Ioannis Papavassiliou for useful comments. This work was supported by the Spanish grant FPA2008-00319/FPA and PROMETEO/2009/091. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-09-25 |