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

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SummarySummary1 The SM should be extended to include neutrino masses and DM.2 In some Radiative Seesaw models, neutrino masses and DM arerelated.3 Coannihilation plays an important role to be consistent with allthe constraints.4 Due to small mass difference between N 1 and N 2 , inelasticscattering between DM and nuclei is possible even if the DM isleptophilic.Takashi Toma (IPPP) Internal Seminar 7th June 2013 32 / 34
Future WorksFuture Works1 Gamma-ray from DM annihilation.E 2 · dJ/dE [GeV/cm 2 /s/sr]10 -510 -610 -710 0 10 1 10 2E [GeV]Required cross section :σv ∼ 10 −27 [cm 3 /s]↔ relic density of DMσv ∼ 10 −26 [cm 3 /s]Large cross section is required ↔ DM relic density2 Lepton Flavor Violation µ → 3e.When Yukawa coupling is large enough, µ → 3e can be largerthan µ → eγ→ Radiative Seesaw or Inverse Seesaw3 The other extensions of the SM.(model building of new radiative seesaw)Takashi Toma (IPPP) Internal Seminar 7th June 2013 33 / 34
Page 2: OutlineOutline1 Introduction2 Neutr
Page 7: Neutrino Mass GenerationExamples of
Page 10 and 11: Dark MatterNature of DM· stable (o
Page 12 and 13: Dark MatterNon-thermal ProductionNo
Page 14 and 15: Concrete ModelInteractions and Neut
Page 16 and 17: Concrete ModelConstraintsThe parame
Page 18 and 19: Concrete ModelConstraintsConstraint
Page 20 and 21: Concrete ModelCoannihilation of DMC
Page 22 and 23: Concrete ModelDirect Detection of D
Page 28 and 29: Extensions of Radiative Seesaw1. Su
Page 30 and 31: Extensions of Radiative Seesaw2. Fl
Page 34: Thank you for your attention!Takash

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