Regular Article - Theoretical Physics
Investigating two-zero textures of inverse neutrino mass matrix under the lamp post of LMA and LMA-D solutions and symmetry realization
Department of Physics and Astronomical Science, Central University of Himachal Pradesh, 176215, Dharamshala, India
Accepted: 14 September 2022
Published online: 27 September 2022
In this work we have investigated the phenomenological consequences of two-zero textures of inverse neutrino mass matrix () in light of the large mixing angle (LMA) and large mixing angle-dark (LMA-D) solutions, later of which originates if neutrinos exhibit non-standard interactions with matter. Out of fifteen possibilities, only seven two-zero textures of are found to be phenomenologically allowed under LMA and/or LMA-D descriptions. In particular, five textures are in consonance with both LMA and LMA-D solutions and are necessarily CP violating while remaining two textures are found to be consistent with LMA solution only. The textures with vanishing (1, 1) element of are, in general, disallowed. All the textures allowed under LMA and LMA-D solutions follow the same neutrino mass hierarchy. Furthermore, textures with vanishing (2, 3) element of are found to be either disallowed or are consistent with LMA description only. We have, also, obtained the implication of the model for decay amplitude . For most of the textures the calculated lower bound on is , which is within the sensitivity reach of decay experiments. We have, also, proposed a flavor model based on discrete non-Abelian flavor group wherein such textures of can be realized within Type-I seesaw setting.
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