Non-Holomorphic $A_4$ Modular Symmetry in Type-I Seesaw: Implications for Neutrino Masses and Leptogenesis

Swaraj Kumar Nanda, Maibam Ricky Devi, Sudhanwa Patra

We propose a minimal extension of the Standard Model with right-handed neutrinos, governed by a non-holomorphic $A_4$ modular flavor symmetry. Within this model framework, the li…