Highly predictive and testable $A_{4}$ flavor model within type-I and II seesaw framework and associated phenomenology

Surender Verma; Monal Kashav; Shankita Bhardwaj

doi:10.1016/j.nuclphysb.2019.114704

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arXiv · 1811.06249

Highly predictive and testable $A_{4}$ flavor model within type-I and II seesaw framework and associated phenomenology

Surender Verma·Monal Kashav·Shankita Bhardwaj

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Abstract

We investigate neutrino mass model based on $A_4$ discrete flavor symmetry in type-I+II seesaw framework. The model has imperative predictions for neutrino masses, mixing and $CP$ violation testable in the current and upcoming neutrino oscillation experiments. The important predictions of the model are: normal hierarchy for neutrino masses, a higher octant for atmospheric angle ($θ_{23}>45^{o}$) and near-maximal Dirac-type $CP$ phase ($δ\approxπ/2$ or $3π/2$) at $3σ$ C. L.. These predictions are in consonance with the latest global-fit and results from Super-Kamiokande(SK), NO$ν$A and T2K. Also, one of the important feature of the model is the existence of a lower bound on effective Majorana mass, $|M_{ee}|\geq 0.047$eV(at 3$σ$) which corresponds to the lower part of the degenerate spectrum and is within the sensitivity reach of the neutrinoless double beta decay(0$νββ$) experiments.

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Surender Verma, Monal Kashav, Shankita Bhardwaj. 2019-07-26. Highly predictive and testable $A_{4}$ flavor model within type-I and II seesaw framework and associated phenomenology. https://doi.org/10.1016/j.nuclphysb.2019.114704

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