The flavor problem and discrete symmetries

The flavor problem and discrete symmetries,10.1016/j.physletb.2009.03.022,Physics Letters B,A. C. B. Machado,V. Pleitez

The flavor problem and discrete symmetries   (Citations: 1)
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In this Letter we propose a multi-Higgs extension of the standard model with Abelian and non-Abelian discrete symmetries in which the mass matrices of the charged fermions obtained from renormalizable interactions are diagonal. However, non-diagonal contributions, that are important for obtaining the CKM matrix in the quark sector, arise from non-renormalizable dimension five interactions. Active neutrinos acquire mass only from non-renormalizable interactions, the non-diagonal entries arising through dimension five operators, while the diagonal entries comes from dimension six operators. Realistic mixing matrices in the neutrino and the quarks sectors are obtained.
Journal: Physics Letters B - PHYS LETT B , vol. 674, no. 3, pp. 223-226, 2009
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