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

Concrete ModelConstraintsTo derive the neutrino mass scale(λ 5 h 210 −11 ∼ M √ )i ∆m 2〈φ〉 0.05 eVThe structure of the neutrino mass matrix is determined by theYukawa matrix h αi .The flavor structure:⎛ ⎞ǫ 1 ǫ 2 h 3′h αi = ⎝ h 1 h 2 h 3⎠, ǫ i ≪ h ih 1 h 2 −h 3ǫ i are understood as deviations from the Tri-bimaximal mixing.→ sin 2 θ 12 = 1 3 +ǫ, sin2 θ 23 = 1 2 +ǫ′ , sin 2 θ 13 = 0+ǫ ′′ .U T PMNS m νU PMNS = diag(m 1 ,m 2 ,m 3 )Takashi Toma (IPPP) Internal Seminar 7th June 2013 17 / 34