58 citations
4 papers
One-parameter Neutrino Mass Matrix and Symmetry Realization
Yuji Kajiyama, Akari Sato, Wakako Sato +1
We investigate the Majorana neutrino mass matrix with one parameter in the context of two texture zeros and its symmetry realization by non-Abelian discrete symmetry. From nu…
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…