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Quark-lepton mass relation and CKM mixing in an A(4) extension of the minimal supersymmetric standard model

AuthorsMorisi, Stefano; Nebot Gómez, Miguel ; Patel, K. M.; Peinado, Eduardo ; Valle, José W. F.
KeywordsNeutrino masses
Issue Date1-Aug-2013
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 88 (3): 036001 - 8 (2013)
AbstractAn 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.88.036001
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