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hep-ph2009★ 19 cited
Non-thermal Gravitino Dark Matter in Gauge Mediation
Koichi Hamaguchi, Ryuichiro Kitano, Fuminobu Takahashi
We show that gravitinos produced by decays of a supersymmetry breaking scalar field (the pseudo-moduli field) can naturally explain the observed abundance of dark matter in a certa…
hep-ph2009★ 7 cited
Inverse Problem of Cosmic-Ray Electron/Positron from Dark Matter
Koichi Hamaguchi, Kouhei Nakaji, Eita Nakamura
We discuss the possibility of solving the inverse problem of the cosmic-ray electron/positron from decaying/annihilating dark matter, and show simple analytic formulae to reconstru…
hep-ph2009★ 44 cited
Measuring lifetimes of long-lived charged massive particles stopped in LHC detectors
Shoji Asai, Koichi Hamaguchi, Satoshi Shirai
Long-lived charged massive particles (CHAMPs) appear in various particle physics models beyond the Standard Model. In this Letter, we discuss the prospects for studying the stoppin…