Theory of neutrino masses and mixing |
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Authors: | W. Grimus |
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Affiliation: | 1.Faculty of Physics,University of Vienna,Vienna,Austria |
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Abstract: | We motivate the usage of finite groups as symmetries of the Lagrangian. After a presentation of basic group-theoretical concepts, we introduce the notion of characters and character tables in the context of irreducible representations and discuss their applications. We exemplify these theoretical concepts with the groups S 4 and A 4. Finally, we discuss the relation between tensor products of irreducible representations and Yukawa couplings and describe a model for tri-bimaximal lepton mixing based on A 4. |
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