2009 Fiscal Year Final Research Report
Generation Structure and Lepton Flavor Violation in Supersymmetric Theories
| Project/Area Number |
16081202
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
YAMAGUCHI Masahiro Tohoku University, 大学院・理学研究科, 教授 (10222366)
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| Co-Investigator(Kenkyū-buntansha) |
MOROI Takeo 東京大学, 大学院・理学系研究科, 教授 (60322997)
YAMADA Youichi 東北大学, 大学院・理学研究科, 助教 (00281965)
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| Project Period (FY) |
2004 – 2009
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| Keywords | 素粒子理論 / 超対称性 / 素粒子実験 |
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| Research Abstract |
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.
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