Lepton flavor violating Z-decays in supersymmetric seesaw modelJ. Cao1, 2, Z. Xiong3 and J.M. Yang2, 4
1 CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P. R. China
2 Institute of Theoretical Physics, Academia Sinica, Beijing 100080, P. R. China
3 Graduate School of Science, Hiroshima University, Hiroshima 937-6256, Japan
4 Department of Physics, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
(Received: 1 September 2003 / / Published online: 20 November 2003)
In the supersymmetric seesaw model, large flavor mixings of sleptons induce the lepton flavor violating (LFV) interactions ( ), which give rise to various LFV processes. In this work we examine the LFV decays . Subject to the constraints from the existing neutrino oscillation data and the experimental bounds on the decays , these LFV Z-decays are found to be sizable, and among them the largest-rate channel can occur with a branching ratio of 10-8 and may be accessible at the LHC or GigaZ experiment.
© Società Italiana di Fisica, Springer-Verlag 2004