Relic abundance of dark matter in universal extra dimension models with right-handed neutrinos(Summer Institute 2007)

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概要

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• Relic abundance of dark matter is investigated in the framework of universal extra dimension models with right-handed neutrinos. These models are free from the serious Kaluza-Klein(KK) graviton problem that the original universal extra dimension model possesses. The first KK particle of the right-handed neutrino is a candidate for dark matter in this framework. When ordinary neutrino masses are large enough such as the degenerate mass spectrum case, the dark matter relic abundance can change significantly. The scale of the extra dimension consistent with cosmological observations can be 500 GeV in the minimal setup of universal extra dimension models with right-handed neutrinos.

• 素粒子論グループ 素粒子研究編集部の論文
• 2008-04-20

著者

• SATO Joe

  Department of Physics, Kyoto University

• Sato Joe

  Department Of Physics Kyoto University

• Yamanaka Masato

  Department of Physics, Saitama University

• Matsumoto Shigeki

  Institute for International Advanced Interdisciplinary Research, Tohoku University

• Senami Masato

  ICRR, University of Tokyo

• Yamanaka Masato

  Department Of Physics Saitama University

• Matsumoto Shigeki

  Institute For International Advanced Interdisciplinary Research Tohoku University

• SENAMI Masato

  ICRR, The University of Tokyo

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