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Quark-lepton mass relation in a realistic A(4) extension of the Standard Model

AuthorsKing, Stephen F.; Morisi, Stefano; Peinado, Eduardo ; Valle, José W. F.
KeywordsNeutrino masses
Issue Date9-Jul-2013
CitationPhysics Letters - Section B 724 (1-3): 68-72 (2013)
AbstractWe propose a realistic A(4) extension of the Standard Model involving a particular quark-lepton mass relation, namely that the ratio of the third family mass to the geometric mean of the first and second family masses are equal for down-type quarks and charged leptons. This relation, which is approximately renormalization group invariant, is usually regarded as arising from the Georgi-Jarlskog relations, but in the present model there is no unification group or supersymmetry. In the neutrino sector we propose a simple modification of the so-called Zee-Wolfenstein mass matrix pattern which allows an acceptable reactor angle along with a deviation of the atmospheric and solar angles from their bi-maximal values. Quark masses, mixing angles and CP violation are well described by a numerical fit.
Publisher version (URL)http://dx.doi.org/10.1016/j.physletb.2013.05.067
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