6533b85dfe1ef96bd12bf248
RESEARCH PRODUCT
Quark-lepton mass relation and CKM mixing in an A(4) extension of the minimal supersymmetric standard model
M. NebotStefano MorisiE. PeinadoJosé W. F. ValleKetan M. Patelsubject
PhysicsQuarkNuclear and High Energy PhysicsParticle physicsMesonUnitarity010308 nuclear & particles physicsCabibbo–Kobayashi–Maskawa matrixPhysics beyond the Standard ModelHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaSupersymmetryNeutrino masses01 natural sciencesHigh Energy Physics - PhenomenologySymmetryHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesUp quarkHigh Energy Physics::Experiment010306 general physicsLeptondescription
An interesting mass relation between down-type quarks and charged leptons has been recently predicted within a supersymmetric SU(3)(c) circle times SU(2)(L) circle times U(1)(Y) model based on the A(4) flavor symmetry. Here we propose a simple extension which provides an adequate full description of the quark sector. By adding a pair of vectorlike up quarks, we show how the CKM entries V-ub, V-cb, V-td and V-ts arise from deviations of the unitarity. We perform an analysis including the most relevant observables in the quark sector, such as oscillations and rare decays of kaons, B-d and B-s mesons. In the lepton sector, the model predicts an inverted hierarchy for the neutrino masses, leading to a potentially observable rate of neutrinoless double beta decay.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-08-01 |