Nearest-Neighbour Interaction from an Abelian Symmetry and Deviations from Hermiticity

We show that Nearest-Neighbour Interaction (NNI) textures for the quark mass matrices can be obtained through the introduction of an Abelian flavour symmetry. The minimal realisation requires a Z_4 symmetry in the context of a two Higgs doublet model. It is further shown that the NNI textures can be...

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Detalles Bibliográficos
Autores principales: Branco, G C, Emmanuel-Costa, D, Simoes, C
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Phys. Lett. B 2010
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2010.05.009
http://cds.cern.ch/record/1236534
Descripción
Sumario:We show that Nearest-Neighbour Interaction (NNI) textures for the quark mass matrices can be obtained through the introduction of an Abelian flavour symmetry. The minimal realisation requires a Z_4 symmetry in the context of a two Higgs doublet model. It is further shown that the NNI textures can be in agreement with all present experimental data on quark masses and mixings, provided one allows for deviations of Hermiticity in the quark mass matrices at the 20% level.

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