4 papers
Detecting Sterile Neutrino Dark Matter at MeV Gamma-Ray Observatories
Subaru Fujisawa, Tatsuya Hayashi, Shigeki Matsumoto +1
We explore the indirect detection of sterile neutrino dark matter within the gauged extension of the Standard Model, in which three right-handed neutrinos account for…
Light WIMPs and MeV Gamma-ray Detection with COSI
Yu Watanabe, Shigeki Matsumoto, Christopher M. Karwin +6
Light weakly interacting massive particles (WIMPs), whose masses are in the sub-GeV scale, have been attracting more attention due to the negative results searching for traditional…
Tree Code Based Neighborhood Algorithms for Discrete Element Methods
Yuki Watanabe, Dominik Krengel, Hans-Georg Matuttis
We report our experiences for the development of a neighborhood algorithm implemented via tree-codes to optimize the performance of a discrete element method (DEM) for convex polyt…
Féeton dark matter above the threshold
Tatsuya Hayashi, Shigeki Matsumoto, Yuki Watanabe +1
The new gauge boson introduced in the minimal extension of the standard model (SM) by gauging the U(1) symmetry plays the role of dark matter when the U(1)…