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Hidden Sector Dark Matter with Global -symmetry and Fermi-LAT 130 GeV -ray Excess
Seungwon Baek, Hiroshi Okada
We suggest a dark matter scenario which could contribute the possible anomaly observed by Fermi-LAT -ray space telescope. It is based on the model recently proposed by Weinberg.…
Two Loop Neutrino Model and Dark Matter Particles with Global Symmetry
Seungwon Baek, Hiroshi Okada, Takashi Toma
We study a two loop induced seesaw model with global symmetry, in which we consider two component dark matter particles. The dark matter properties are investigated to…
Radiative Generation of the Lepton Mass
Hiroshi Okada, Kei Yagyu
We propose a new mechanism where both Dirac masses for the charged-leptons and Majorana masses for neutrinos are generated via quantum levels. The charged-lepton masses are given b…
Electron/Muon Specific Two Higgs Doublet Model
Yuji Kajiyama, Hiroshi Okada, Kei Yagyu
We discuss two Higgs doublet models with a softly-broken discrete symmery, where the mass matrix for charged-leptons is predicted as the diagonal form in the weak ei…
Flavor Model in Three Loop Seesaw and Higgs Phenomenology
Yuji Kajiyama, Hiroshi Okada, Kei Yagyu
We propose a new type of radiative seesaw model in which observed neutrino masses are generated through a three-loop level diagram in combination with tree-level type-II seesaw mec…
New Interpretation of the Recent Result of AMS-02 and Multi-component Decaying Dark Matters with non-Abelian Discrete Flavor Symmetry
Yuji Kajiyama, Hiroshi Okada, Takashi Toma
Recently the AMS-02 experiment has released the data of positron fraction with much small statistical error. Because of the small error, it is no longer easy to fit the data with a…