Lepton-flavor violation via right-handed neutrino Yukawa couplings in the supersymmetric standard model
- Tokyo Institute of Technology, Department of Physics, Oh-okayama, Meguro, Tokyo 152 (Japan)
Various lepton-flavor-violating (LFV) processes in the supersymmetric standard model with right-handed neutrino supermultiplets are investigated in detail. It is shown that large LFV rates are obtained when tan{beta} is large. In the case where the mixing matrix in the lepton sector has a similar structure as the Kobayashi-Maskawa matrix and the third-generation Yukawa coupling is as large as that of the top quark, the branching ratios can be as large as {ital B}({mu}{r_arrow}{ital e}{gamma}){approx_equal}10{sup {minus}11} and {ital B}({tau}{r_arrow}{mu}{gamma}){approx_equal}10{sup {minus}7}, which are within the reach of future experiments. If we assume a large mixing angle solution to the atmospheric neutrino problem, the rate for the process {tau}{r_arrow}{mu}{gamma} becomes larger. We also discuss the difference between our case and the case of the minimal SU(5) grand unified theory. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279166
- Journal Information:
- Physical Review, D, Vol. 53, Issue 5; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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