232 citations · 1.1k across the 20 of their papers we have counts for
20 papers
Electroweak bremsstrahlung in bino-like dark matter annihilations
Kenta Shudo, Takeshi Nihei
We investigate the effects of electroweak bremsstrahlung on bino-like neutralino dark matter pair annihilations in the minimal supersymmetric standard model (MSSM). We calculate th…
Observational constraints on the interacting Ricci dark energy model
Masashi Suwa, Takeshi Nihei
We consider an extension of the holographic Ricci dark energy model by introducing an interaction between dark energy and matter. In this model, the dark energy density is given by…
Light wino dark matter in brane world cosmology
Takeshi Nihei, Nobuchika Okada, Osamu Seto
The thermal relic density of the wino-like neutralino dark matter in the brane world cosmology is studied. The expansion law at a high energy regime in the brane world cosmology is…
Suppression of the neutralino relic density with supersymmetric CP violation
Takeshi Nihei
We study pair annihilations of the neutralino dark matter in the minimal supersymmetric standard model with CP violation. We consider the case that the higgsino mass and the trilin…
Nucleon Edm from Atomic Systems and Constraints on Supersymmetry Parameters
Sachiko Oshima, Takeshi Nihei, Takehisa Fujita
The nucleon EDM is shown to be directly related to the EDM of atomic systems. From the observed EDM values of the atomic Hg system, the neutron EDM can be extracted, which gives a…
Neutralino dark matter in brane world cosmology
Takeshi Nihei, Nobuchika Okada, Osamu Seto
The thermal relic density of the neutralino dark matter in the brane world cosmology is studied. Since the expansion law at a high energy regime in the brane world cosmology is mod…