Radiative Neutrino Mass Generation and Dark Matter - Institute for ...

Extensions of Radiative Seesaw2. Flavor SymmetryIntroduce flavor symmetry to derive neutrino mixing.θ 12 = 34 ◦ , θ 23 = −45 ◦ , θ 13 = −9 ◦DM decay channel is also controlled by the symmetry.Allowed interaction of DMs X and X ′Decay rateL = λ XΛ 2LLEc X c + λ X ′Λ 2 LLEc X c′dΓ Xdx = |λ X| 2 m 5 X48(4π) 3 Λ 4x2 (21−16x), x = 2E em XΓ X = |λ X| 2 m 5 X16(4π) 3 Λ 4Takashi Toma (IPPP) Internal Seminar 7th June 2013 30 / 34