Lepton flavor violating leptonic and semileptonic decays of charged leptons in the minimal supersymmetric standard model |
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Authors: | T Fukuyama A Ilakovac T Kikuchi |
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Institution: | (1) Department of Physics, Ritsumeikan University, Kusatsu Shiga, 525-8577, Japan;(2) Department of Physics, University of Zagreb, P.O. Box 331, Bijenička cesta 32, 10002 Zagreb, Croatia;(3) Theory Division, KEK, Oho 1-1, Tsukuba Ibaraki, 305-0801, Japan;(4) Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA |
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Abstract: | We consider the leptonic and semileptonic (SL) lepton-flavor violating (LFV) decays of the charged leptons in the minimal
supersymmetric standard model (MSSM) with right-handed neutrinos. The parameters of the MSSM model are determined in the framework
of the minimal supersymmetric SO(10) GUT model assuming the minimal supergravity model of supersymmetry breaking. The free
parameters of the model are constrained adopting the WMAP cold dark matter constraint and adjusting the neutrino oscillation
data. So constrained, the SO(10) GUT model gives a definite prediction for the Dirac-neutrino Yukawa matrix, which induces
all LFV effects in the MSSM model through renormalization group equations of soft SUSY breaking parameters. A very detailed
numerical analysis has been made to define numerically all MSSM parameters necessary for the evaluation of the LFV amplitudes.
The basic LFV amplitudes in MSSM were rederived and improved. The formalism for the evaluation of all SL LFV amplitudes is
given. Numerical results for dominant SL LFV branching ratios, the anomalous magnetic moment of the muon and the ℓ→ℓ’γ branching
ratios are given. |
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Keywords: | |
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