6533b839fe1ef96bd12a641f
RESEARCH PRODUCT
Stability of dark matter from the D4×Z2f flavor group
Davide MeloniEduardo PeinadoStefano Morisisubject
QuarkPhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsCabibbo–Kobayashi–Maskawa matrixSpontaneous symmetry breakingHigh Energy Physics::PhenomenologyDark matterScalar potentialDihedral group7. Clean energy01 natural sciencesEffective mass (solid-state physics)0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsLeptondescription
Abstract We study a model based on the dihedral group D 4 in which the dark matter is stabilized by the interplay between a remnant Z 2 symmetry, of the same spontaneously broken non-abelian group, and an auxiliary Z 2 f introduced to eliminate unwanted couplings in the scalar potential. In the lepton sector the model is compatible with normal hierarchy only and predicts a vanishing reactor mixing angle, θ 13 = 0 . Since m ν 1 = 0 , we also have a simple prediction for the effective mass in terms of the solar angle: | m β β | = | m ν 2 | sin 2 θ ⊙ ∼ 10 − 3 eV . There also exists a large portion of the model parameter space where the upper bounds on lepton flavor violating processes are not violated. We incorporate quarks in the same scheme finding that a description of the CKM mixing matrix is possible and that semileptonic K and D decays mediated by flavor changing neutral currents are under control.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-09-01 | Physics Letters B |