We present a SUSY SU(5)×T′ unified flavor model with type I seesaw mechanism of neutrino mass generation, which predicts the reactor neutrino angle to be θ130.14 close to the recent results from the Daya Bay and RENO experiments. The model predicts also values of the solar and atmospheric neutrino mixing angles, which are compatible with the existing data. The T′ breaking leads to tribimaximal mixing in the neutrino sector, which is perturbed by sizeable corrections from the charged lepton sector. The model exhibits geometrical CP violation, where all complex phases have their origin from the complex Clebsch-Gordan coefficients of T ′. The values of the Dirac and Majorana CP violating phases are predicted. For the Dirac phase in the standard parametrization of the neutrino mixing matrix we get a value close to 90°: δ≅π/2-0. 45θc≅84.3°, θc being the Cabibbo angle. The neutrino mass spectrum can be with normal ordering (2 cases) or inverted ordering. In each case the values of the three light neutrino masses are predicted with relatively small uncertainties, which allows one to get also unambiguous predictions for the neutrinoless double beta decay effective Majorana mass. © 2012 American Physical Society.
|Titolo:||A supersymmetric SU(5)×T′ unified model of flavor with large θ13|
|Autori:||Meroni, A; Petkov, S.T.; Spinrath, M|
|Rivista:||PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||10.1103/PhysRevD.86.113003|
|Appare nelle tipologie:||1.1 Journal article|