A lepton model with nearly Cobimaximal mixing

Abstract

Cobimaximal mixing predicts $\pi /4$ and $3\pi /2$ for the atmospheric angle and the Dirac CP-violating phase, respectively. These values are in tension with the neutrino globals fits. If this pattern was behind the lepton mixings, then it would have to be broken. In that case, in this paper, we explore the ${\mathbf{S}}_3$ flavor symmetry within the $B-L$ gauge model where the aforementioned scheme comes from the neutrino sector but the charged lepton contribution breaks the well known predictions so the mixing observables as well as the $m_{ee}$ mass can be accommodated quite well according to the available data. Notably, the predicted regions for the Dirac CP-violating phase would allow us to test the model in future experiments.

arXiv comment16 pages, 7 figures. Minor corrections, references added and the conclusions are unchanged. Version to be published in Revista Mexicana de Física

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