Lepton Flavor Violation in SUSY-GUT Model with Spetial Mass Spectrum(Summer Institute 2006)

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概要

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• We analyze lepton flavor violating τ → μγ and μ → eγ processes in SUSY GUT model in which sfermions have special mass spectrum. It is assumed that only third generation sfermions which are contained in 10(Q,U^c,E^c) of SU(5) can have a different mass from the others. This mass spectrum is led from E_6 GUT model with horizontal symmetries. It is shown that branching ratios of τ → μγ and μ → eγ depend strongly on a right-handed stau mass. The weak scale stability requires the light stau, so large decay rates can be expected in this scenario. When the stau mass is around 150 GeV and tanβ〜10, the branching ratios can be larger than Br(τ → μγ) ≃ 10^<-8> and Br(μ → eγ) ≃ 5×10^<-12>, which are within reach of future experiments. In addition, this model has an interesting feature that the final state charged lepton tends to have the right-handed chirality.

• 素粒子論グループ 素粒子研究編集部の論文
• 2007-02-20

著者

• Kim S.

  Department Ob

• Kim S.-g.

  Department Of Physics Nagoya University

• YOSHIKAWA T.

  Department of Physics, Nagoya University

• Maekawa N.

  Department pf Physics,Nagoya University

• Sakurai K.

  Department pf Physics,Nagoya University

• Matsuzaki A.

  Department of Physics, Nagoya University

• Kim S.-G

  Department of Physics, Nagoya University

• Maekawa N.

  Department Of Physics Nagoya University

• Sakurai K.

  Department Of Physics Nagoya University

• Yoshikawa T.

  Department Of Physics Nagoya University

• Sakurai K.

  Department Of Bioenvironmental Medicine Graduate School Of Medicine Chiba University

• Matsuzaki A.

  Department Of Physics Nagoya University

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