Active-Sterile neutrino masses and mixings in $A_4$ minimal extended seesaw mechanism

M. Kishan Singh, S. Robertson Singh, N. Nimai Singh

Assuming the existence of an eV or KeV scale sterile neutrino, we develop a 3+1 neutrino mass model using $A_4\times Z_4\times Z_2$ symmetry group. Three Higgs $H,H^{\prime }$ and…