231 citations · 2.6k across the 73 of their papers we have counts for
4 papers · 1 filter
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)…
Enhancement of the annihilation of dark matter in a radiative seesaw model
Daijiro Suematsu, Takashi Toma, Tetsuro Yoshida
The radiative seesaw model with an inert doublet has been shown to be attractive from a viewpoint of both neutrino masses and cold dark matter. However, if we apply this model to t…