851 citations · 12.8k across the 188 of their papers we have counts for
7 papers · 2 filters
Right-Handed Sneutrino as Cold Dark Matter
Takehiko Asaka, Koji Ishiwata, Takeo Moroi
We consider supersymmetric models with right-handed neutrinos where neutrino masses are purely Dirac-type. In this model, right-handed sneutrino can be the lightest supersymmetric…
Gravitino Production in the Early Universe and Its Implications to Particle Cosmology
Takeo Moroi
Effects of the unstable gravitino on the big-bang nucleosynthesis (BBN) and its implications to particle cosmology are discussed. If the gravitino mass is smaller than \sim 20 TeV,…
Supersymmetric Heavy Higgses at e^+e^- Linear Collider and Dark-Matter Physics
Takeo Moroi, Yasuhiro Shimizu
We consider the capability of the e^+e^- linear collider (which is recently called as the International Linear Collider, or ILC) for studying the properties of the heavy Higgs boso…
Big-Bang Nucleosynthesis with Unstable Gravitino and Upper Bound on the Reheating Temperature
Kazunori Kohri, Takeo Moroi, Akira Yotsuyanagi
We study the effects of the unstable gravitino on the big-bang nucleosynthesis. If the gravitino mass is smaller than \sim 10 TeV, primordial gravitinos produced after the inflatio…
Reconstructing Dark Matter Density with e^+e^- Linear Collider in Focus-Point Supersymmetry
Takeo Moroi, Yasuhiro Shimizu, Akira Yotsuyanagi
It has been known that, in the focus point scenario of supersymmetry, the thermal relic of the lightest superparticle (LSP) is known to be a good candidate of the cold dark matter.…
Dark Matter and Baryon Asymmetry of the Universe in Large-Cutoff Supergravity
M. Ibe, Takeo Moroi, T. Yanagida
We propose a consistent scenario of the evolution of the universe based on the large cutoff supergravity (LCSUGRA) hypothesis of supersymmetry breaking, where the gravitino and sfe…