Jan 10 – 14, 2022
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Implications of $A_4$ modular symmetry on neutrino mass, mixing and leptogenesis with linear seesaw

Jan 10, 2022, 4:18 PM
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Online only

Poster Beyond the Standard Model Beyond the Standard Model


Rukmani Mohanta (University of Hyderabad)


We consider the application of $A_4$ modular symmetry in the linear seesaw framework, which restricts the use of multiple flavon fields. Linear seesaw is realized with six heavy $SU(2)_L$ singlet fermion superfields and a weighton in a supersymmetric framework. The non-trivial transformation of Yukawa couplings under the $A_4$ modular symmetry helps to explore the neutrino phenomenology with a specific flavor structure of the mass matrix. We discuss the phenomena of neutrino mixing and show that the obtained mixing angles and CP violating phase in this framework are compatible with the observed $3\sigma$ range of the current oscillation data. In addition, we also investigate the non-zero CP asymmetry from the decay of lightest heavy fermion superfield to explain the preferred phenomena of baryogenesis through leptogenesis including flavor effects.

Primary authors

Mr Mitesh Kumar Behera (University of Hyderabad) Rukmani Mohanta (University of Hyderabad) Dr Shivaramakrishna Singirala (University of Hyderabad, Hyderabad, India) Dr Subhasmita Mishra (Centurion University of Technology and Management, Odisha)

Presentation materials