Modular $A_4$ symmetry and light dark matter with gauged $U(1{)}_{B-L}$

Keiko I. Nagao, Hiroshi Okada

We propose a radiative seesaw model with a light dark matter candidate (DM) under modular $A_4$ and gauged $U(1{)}_{B-L}$ symmetries, in which neutrino masses are generated via one-l…