6533b855fe1ef96bd12b148a
RESEARCH PRODUCT
A(4)-based neutrino masses with Majoron decaying dark matter
Anjan S. JoshipuraJ. N. EstevesMariam TórtolaJorge C. RomãoJosé W. F. ValleFilipe R. Joaquimsubject
PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsPhysics beyond the Standard ModelCosmic microwave backgroundDark matterHigh Energy Physics::PhenomenologyCosmic background radiationFísicaFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciences7. Clean energyLepton numberHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometry0103 physical sciencesNeutrino010306 general physicsMajoronParticle Physics - Phenomenologydescription
We propose an A(4) flavor-symmetric SU(3) circle times SU(2) circle times U(1) seesaw model where lepton number is broken spontaneously. A consistent two-zero texture pattern of neutrino masses and mixing emerges from the interplay of type-I and type-II seesaw contributions, with important phenomenological predictions. We show that, if the Majoron becomes massive, such seesaw scenario provides a viable candidate for decaying dark matter, consistent with cosmic microwave background lifetime constraints that follow from current WMAP observations. We also calculate the subleading one-loop-induced decay into photons which leads to a monoenergetic emission line that may be observed in future x-ray missions such as Xenia.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-07-06 |