309 citations · 1.3k across the 29 of their papers we have counts for
29 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…
Multicomponent dark matter particles in a two-loop neutrino model
Yuji Kajiyama, Hiroshi Okada, Takashi Toma
We construct a loop induced seesaw model in a TeV scale theory with gauged U(1)_{B-L} symmetry. Light neutrino masses are generated at two-loop level and right-handed neutrinos als…
Two Loop Radiative Seesaw Model with Inert Triplet Scalar Field
Yuji Kajiyama, Hiroshi Okada, Kei Yagyu
We propose a radiative seesaw model with an inert triplet scalar field in which Majorana neutrino masses are generated at the two loop level. There are fermionic or bosonic dark ma…