Abstract
We investigate origins of predictive one-zero neutrino mass textures in a systematic way. Here we search Abelian continuous(discrete) global symmetries, and non-Abelian discrete symmetries, and show how to realize these neutrino masses. Then we propose a concrete model involving a dark matter candidate and an extra gauge boson, and show their phenomenologies.
Highlights
One of the most important issues in particle physics is to solve the mystery of the flavor structure of quarks and leptons, such as the generation number, mass hierarchy, mixing angles, and CP phases
IV, we propose a concrete model, in which we formulate the boson sector, fermion sector, and dark matter sector (DM), and analyze collider physics based on an additional gauge symmetry
We have systematically explored the origins of neutrino textures in the canonical seesaw model with two right-handed neutrinos based on global Uð1Þμ−τ flavor symmetry, and smaller non-Abelian flavor symmetries, and we have shown several promising symmetries to find predictive textures, Uð1Þμ−τ and D4, depending on appropriate charge assignments of our fields
Summary
One of the most important issues in particle physics is to solve the mystery of the flavor structure of quarks and leptons, such as the generation number, mass hierarchy, mixing angles, and CP phases. Such patterns with one texture zero lead to several interesting predictions among neutrino masses and mixing angles Such predictions for the normal hierarchy are not compatible with the experimental data. Non-Abelian discrete flavor symmetries have been studied by a lot of authors in order to realize the lepton masses and mixing angles as well as the CP phases. (See [10,11].) flavor symmetries can be realized in magnetized D-brane models and intersecting D-brane models within the framework of type II superstring theory [13,14]. In this paper we consider these S3 and D4 flavor symmetries as well as global Uð1Þ symmetry to realize the neutrino mass textures obtained in Refs.
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