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arXiv · 1101.0137

Theory of Neutrino Masses and Mixing

Walter Grimus
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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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Walter Grimus. 2010-12-30. Theory of Neutrino Masses and Mixing. https://doi.org/10.1134/s1063779611040083

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