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We categorize general messenger and matter interactions in gauge-mediated SUSY breaking models by an R-parity for the messengers and study their phenomenological consequences. The new interactions may induce baryon- and lepton-number violating processes as well as flavor-changing neutral currents. Bounds on the couplings from low-energy data are generally weak due to the large messenger mass suppression,...
We study in the framework of R-parity violating supersymmetric theories the effect of R-parity violation due to the operator L i L j E k on the (V-A) structure of the muon decay. The precisely measured muon decay parameters can constrain a product of R-parity violating couplings: λ 232 λ 131 <0.022 at the 90% CL, which is complementary...
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