Hybrid seesaw neutrino model in SUSY $SU(5)\times {\mathbb{A}}_4$

Abstract

Motivated by recent results from neutrino experiments, we study the neutrino masses and mixing in the framework of a SUSY $SU(5)\times {\mathbb{A}}_4$ model. The hybrid of Type I and Type II seesaw mechanisms leads to the nonzero value of the reactor angle ${\theta }_{13}\ne 0$ and to the recently disfavored maximal atmospheric angle ${\theta }_{23}\ne 45^{\circ }$ by the NOvA experiment. The phenomenological consequences of the model are studied for both normal and inverted mass hierarchies. The obtained ranges for the effective Majorana neutrino mass $m_{\beta \beta }$, the electron neutrino mass $m_{{\nu }_e}$, and the $CP$ violating phase ${\delta }_{CP}$ lie within the current experimental allowed ranges where we find that the normal mass hierarchy is favored over the inverted one.

arXiv comment27 pages, 10 figures, REVTeX

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• $A_4$ flavor symmetric model in SUSY SU(5) GUT