Speaker
Description
In this work, we study the phenomenological effects of an eV-scale sterile neutrino in neutrinoless double beta decay and active neutrino masses and mixings. We use $A_4 \times Z_4$ discrete symmetry extension of Standard Model to develop a model of neutrino masses and mixings in 3+1 scheme within the Minimal Extended Seesaw mechanism. We consider an $A_4$ triplet right-handed neutrino N and one eV-scale sterile neutrino singlet S in which the deviation from $\mu-\tau$ symmetry in neutrino mass matrix is generated through an antisymmetric interaction of the right-handed triplet neutrino. This model successfully explains leptonic mixing with non-zero $\theta_{13}$ and the cosmological bounds on sum of active neutrino mass $\sum m_i < 0.12$ eV. The effects on neutrinoless double beta decay and baryogenesis via resonant leptogenesis are also studied and significant results are observed within the experimental bounds.
| Session | Neutrino Physics |
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