We study four SU (5) supersymmetric models which exhibit S3 and/or ZN
symmetries, that are finite to two or all loops and their corresponding mass
matrices. Some of the models have viable mass textures, like the Nearest Neighbour
Interaction one. In particular, an all-loop finite model was identified, which
has a significant parameter reduction and could reproduce the observed...
We explore the flavor symmetries emerging from string model building and their phenomenological consequences. We point out that there is only a small set of admissible flavor symmetries, where both modular and traditional symmetries appear and strong constraints on the flavor representations and other properties gover automatically the effective action. These findings may be considered as...
With hints from superstring theories, we proceed to a bottom-up construction of an effective theory of the Standard Model Yukawa couplings. Symmetric and asymmetric textures with Grand-Unified constraints with possible flavor groups are discussed.
