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

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Extensions of Radiative Seesaw1. Supersymmetry with anomalous U(1) AA pair of inert Higgs η u and η d is required.Break gauge coupling unification at GUT scale because ofadditional inert Higgs doublets ηU(1) A anomaly cancellation by Green-Schwarz mechanismδL = − g2 A TrQ A32π 2 α(x)ǫ µνρσ F µν F ρσL = aǫ µνρσ F µν F ρσ , a → a+δ GS α(x)Remain accidental Z 2 parity after the U(1) A breakingTakashi Toma (IPPP) Internal Seminar 7th June 2013 28 / 34
Extensions of Radiative SeesawInteresting featuresZ 2 is softly broken → metastable DMlifetime is determined by charge assignment of U(1) Aτ ∝ exp(δ −1GS ), δ GS = TrQ A48π 2We have Multi-component DM (R-parity and softly broken Z 2 )Neutralino and the lightest Z 2 odd particle.The positron excess of AMS-02 and PAMELA is explained bythe decay of DM.l αψ N1¯l βχTakashi Toma (IPPP) Internal Seminar 7th June 2013 29 / 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 30 and 31: Extensions of Radiative Seesaw2. Fl
Page 32 and 33: SummarySummary1 The SM should be ex
Page 34: Thank you for your attention!Takash

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

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