Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1088/1126-6708/2009/04/013
Keywords
Neutrino Physics; CP violation; Discrete and Finite Symmetries
Categories
Funding
- European Union [MRTN-CT-2006-035505]
- Portuguese Fundacao para a Ciencia e a Tecnologia [U777-Plurianual]
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We construct a model for tri-bimaximal lepton mixing which employs only family symmetries and their soft breaking; neither vacuum alignment nor supersymmetry, extradimensions, or non-renormalizable terms are used in our model. It is an extension of the Standard Model making use of the seesaw mechanism with five right-handed neutrino singlets. The scalar sector comprises four Higgs doublets and one complex gauge singlet. The horizontal symmetry of our model is based on the permutation group S-3 of the lepton families together with the three family lepton numbers - united this constitutes a symmetry group Delta(6 infinity(2)). The model makes no predictions for the neutrinomasses.
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