Supersymmetric Lepton Flavor Violation and Leptogenesis

نویسندگان

  • F. Deppisch
  • R. Rückl
چکیده

We present and discuss constraints on supersymmetric type I seesaw models imposed by neutrino data, charged lepton flavor violation and thermal leptogenesis. 1 Supersymmetric seesaw mechanism and slepton mass matrix The observed neutrino oscillations imply the existence of neutrino masses and lepton flavor mixing, and give hints towards physics beyond the Standard Model. For example, the smallness of the neutrino masses suggests the realization of the seesaw mechanism involving heavy right-handed Majorana neutrinos. The latter violate lepton number and CP , and thus allow for leptogenesis. Particularly interesting are supersymmetric scenarios, where the lepton flavor violation (LFV) present in the neutrino sector is transmitted to the slepton sector giving also rise to measurable LFV processes of charged leptons. A minimal model of this kind is obtained if three right-handed neutrino singlet fields ν R are added to the MSSM particle content. In this model, one can have the following Majorana mass and Yukawa interaction terms 1 :

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تاریخ انتشار 2006