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Abelian and non-Abelian discrete symmetries in models of flavor

Christoph Luhn

(IPPP, Durham Uni., UK)


Sala P9, IST, Pavilhão Matemática
Tuesday, May 28th, 2013 at 05:00 PM

Abstract

Discrete symmetries play a crucial role in physics beyond the Standard Model. Focusing on supersymmetric models which aim at explaining the family structure of the quarks and leptons, I first discuss how discrete Abelian symmetries such as e.g. R-parity can emerge from an underlying U(1) Froggatt-Nielsen family symmetry. The observation of large and very peculiar mixing angles in the neutrino sector motivates the idea a non-Abelian discrete family symmetry. I review their implementation in supersymmetric model building, and discuss the implications of the recent measurement of theta_13 of about 9 degrees by the Daya Bay and RENO collaborations.


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