Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
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<strong>Neutrino</strong> <strong>Mass</strong> <strong>Generation</strong><strong>Neutrino</strong> <strong>Mass</strong> <strong>Generation</strong> at Tree LevelInverse seesaw mechanismSmall lepton number violation (L/) → light neutrino masses.Three singlets S L are added.L = −ν L m D N R −NR cMSL c − 1 2 S LµSLc<strong>Mass</strong> matrix⎛0 m D 0⎝ mDT 0 M0 M T µ⎞⎠ →m ν ∼ m D M −1 µM T−1 m T D(if µ ≪ m D , M)Typical scale of µ is keV.M ∼ 10 TeV, m D ∼ 100 GeV → m ν ∼ 0.1 eV.Note : generally 1 2 N cR µ′ N R also exists.Takashi Toma (IPPP) Internal Seminar 7th June 2013 5 / 34
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