Generation Structure and Lepton Flavor Violation in Supersymmetric Theories

超对称理论中的生成结构和轻子味破坏

• 批准号: 16081202
• 负责人: YAMAGUCHI Masahiro
• 金额: $ 9.86万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16081202/
• 关键词: 素粒子理論; 超対称性; 素粒子実験; 素粒子物理学; レプトンフレーバー破れ; 素粒子論; レプトンフレーバーの破れ; B中間子の物理; B中間子

Lepton flavor violation is studied in the supersymmetric extension of the standard model of particle physics. We compare the lepton sector flavor violation with that of quark sector, and identify the superparticle mass spectrum in which the lepton flavor gives better discovery potential. Related to this, a new mechanism of supersymmetry breaking and mediation is proposed, which can be a low-energy consequence of string theories. It is pointed out that the moduli decay into gravitino pairs has a sizable branching ratio, and its cosmological implications are discussed.

在粒子物理标准模型的超对称推广下，研究了轻子味破坏。我们比较了轻子区和夸克区的味道破坏，并确定了轻子味具有更好的发现潜力的超粒子质谱图。与此相关，提出了一种新的超对称破缺和调解机制，它可以是弦理论的低能结果。指出模衰变为引力子对具有相当大的分支比，并讨论了它的宇宙学意义。

项目成果

Long-lived unstable superparticles at the LHC

• DOI: 10.1016/j.physletb.2008.09.024
• 发表时间: 2008-07
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Koji Ishiwata;Takumi Ito;T. Moroi

Right-handed sneutrino as cold dark matter of the universe

• DOI: 10.1103/physrevd.75.065001
• 发表时间: 2006-12
• 作者: T. Asaka;Koji Ishiwata;T. Moroi

Non-Gaussianity and baryonic isocurvature fluctuations in the curvaton scenario

• DOI: 10.1016/j.physletb.2008.12.034
• 发表时间: 2008-10
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: T. Moroi;Tomo Takahashi

Cosmic Gamma-ray from inverse Compton process in unstable dark matter scenario

• DOI: 10.1016/j.physletb.2009.07.004
• 发表时间: 2009-05
• 期刊: Physics Letters B
• 影响因子: 4.4
• 作者: Koji Ishiwata;S. Matsumoto;T. Moroi

Gravitinos from heavy scalar decay

重标量衰变产生的引力子

• 发表时间: 2006
• 期刊: Phys. Rev D74
• 作者: T. Asaka;S. Nakamura;M. Yamaguchi
• 通讯作者: M. Yamaguchi