6533b871fe1ef96bd12d1b09

RESEARCH PRODUCT

Realistic Tri-Bi-Maximal neutrino mixing

José W. F. VallePeng ChenSalvador Centelles ChuliáGui-jun DingRahul Srivastava

subject

PhysicsParticle physics010308 nuclear & particles physicsPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologyFOS: Physical sciences01 natural sciencesHigh Energy Physics - ExperimentMAJORANAHigh Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)Double beta decay0103 physical sciencesCP violationHigh Energy Physics::ExperimentNeutrino010306 general physicsNeutrino oscillationAnsatzLepton

description

We propose a generalized version of the Tri-Bi-Maximal (TBM) ansatz for lepton mixing, leading to non-zero reactor angle $\theta_{13}$ and CP violation. The latter is characterized by two CP phases. The Dirac phase affecting neutrino oscillations is nearly maximal ($\delta_{CP} \sim \pm \pi/2$), while the Majorana phase implies narrow allowed ranges for the neutrinoless double beta decay amplitude. The solar angle $\theta_{12}$ lies nearly at its TBM value, while the atmospheric angle $\theta_{23}$ has the TBM value for maximal $\delta_{CP}$. Neutrino oscillation predictions can be tested in present and upcoming experiments.

https://dx.doi.org/10.48550/arxiv.1806.03367