116 citations · 257 across the 5 of their papers we have counts for
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Long-Lived Unstable Superparticles at the LHC
Koji Ishiwata, Takumi Ito, Takeo Moroi
In various models of supersymmetry (SUSY), the lightest superparticle in the minimal SUSY standard model sector, which we call MSSM-LSP, becomes unstable. Then, we may observe the…
High Energy Cosmic Rays from the Decay of Gravitino Dark Matter
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi
We study gamma ray and positron in high energy cosmic ray from the decay of the gravitino dark matter in the framework of supersymmetric model with R-parity violation. Even though…
Cosmology of Gravitino LSP Scenario with Right-Handed Sneutrino NLSP
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi
We consider supersymmetric model with right-handed (s)neutrinos where the neutrino masses are purely Dirac-type. We discuss cosmology based on such a scenario, paying particular at…
Gravitino Dark Matter with Weak-Scale Right-Handed Sneutrino
Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi
We consider cosmological implications of supersymmetric models with right-handed (s)neutrinos where the neutrino masses are purely Dirac-type. We pay particular attention to the ca…
Right-Handed Sneutrino as Cold Dark Matter of the Universe
Takehiko Asaka, Koji Ishiwata, Takeo Moroi
We consider the minimal supersymmetric standard model (MSSM) extended by introducing three right-handed (s)neutrinos to account for neutrino masses in the oscillation experiments.…
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…