Investigación

 

Radiative generation of light fermion masses in a SU(3)_H horizontal symmetry model

 

A. Hernández Galeana

 

Departamento de Física de la Escuela Superior de Física y Matemáticas. Instituto Politécnico Nacional. U.P. "Adolfo López Mateos", C.P. 07738. México, D.F.

 

Recibido el 29 de enero de 2004.
Aceptado el 19 de marzo de 2004.

 

Abstract

In a model with a gauge group SU(3)_H ⊗ G_SM, where SU(3)_H is a horizontal symmetry and G_SM = SU(3)_C ⊗ SU(2)_L ⊗ U(1)_Y is the standard model, we propose a radiative mechanism of mass generation mediated by the SU(3)_H gauge bosons for the light fermions, meanwhile the masses of the heaviest family are generated by the implementation of see - saw mechanisms with the introduction of vectorial fermions.

Keywords: Horizontal symmetry; fermion masses.

 

Resumen

En un modelo con grupo de norma SU(3)_H ⊗ G_SM, donde SU(3)_H es una simetría horizontal y G_SM = SU(3)_C ⊗ SU(2)_L ⊗ U(1)_Y es el Modelo Estándar, proponemos un mecanismo radiativo de generación de masas a través de los bosones vectoriales de SU(3)_H para los fermiones ligeros, mientras que las masas de la familia mas pesada se generan por medio de la implementación de mecanismos see - saw con la introducción de fermiones vectoriales.

Descriptores: Simetría horizontal; masas de fermiones.

 

PACS: 12.15.Ff; 12.10.-g

 

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