Generation Structure and Lepton Flavor Violation in Supersymmetric Theories

在粒子物理标准模型的超对称扩展中研究了轻子味违逆。我们将轻子扇区风味违反与夸克扇区风味违反进行了比较，并确定了轻子风味具有更好发现潜力的超粒子质谱。与此相关，提出了一种新的超对称破缺和中介机制，它可能是弦理论的低能量结果。指出模衰变成引力子对具有相当大的分支比，并讨论了其宇宙学意义。

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.