115 citations · 206 across the 5 of their papers we have counts for
5 papers
Right-handed Sneutrino Dark Matter in Supersymmetric B-L Model
Shaaban Khalil, Hiroshi Okada, Takashi Toma
We show that the lightest right-handed sneutrino in TeV scale supersymmetric B-L model with inverse seesaw mechanism is a viable candidate for cold dark matter. We find that it acc…
Signals of dark matter in a supersymmetric two dark matter model
Hiroki Fukuoka, Daijiro Suematsu, Takashi Toma
Supersymmetric radiative neutrino mass models have often two dark matter candidates. One is the usual lightest neutralino with odd R parity and the other is a new neutral particle…
Dark matter in the supersymmetric radiative seesaw model with an anomalous U(1) symmetry
Daijiro Suematsu, Takashi Toma
The existence of an anomalous U(1) symmetry is shown to play a crucial role in the supersymmetric radiative seesaw model for neutrino masses. It explains the smallness of some coup…
Seesaw Mechanism Confronting PAMELA in S_4 Flavor Symmetric Extra U(1) Model
Yasuhiro Daikoku, Hiroshi Okada, Takashi Toma
We study cosmic-ray anomaly observed by PAMELA based on E_6 inspired extra U(1) model with S_4 flavor symmetry. In our model, the lightest flavon has very long lifetime of O(10^18)…
Reconciliation of CDM abundance and in a radiative seesaw model
Daijiro Suematsu, Takashi Toma, Tetsuro Yoshida
We reexamine relic abundance of a singlet fermion as a CDM candidate, which contributes to the neutrino mass generation through radiative seesaw mechanism. We search solutions for…