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

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

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Morisi, S.; Nebot Gómez, Miguel; Patel, K. M.; Peinado Rodríguez, Eduardo; Furtado Valle, José Wagner

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1103/PhysRevD.88.036001

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.

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