Constraints on R-parity violating couplings from LEP/SLD hadronic observables

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dc.creatorLebedev, Oleg
dc.creatorLoinaz, Will
dc.creatorTakeuchi, Tatsu
dc.date1999-11-25
dc.date2000-01-27
dc.date.accessioned2026-07-07T04:08:55Z
dc.date.available2026-07-07T04:08:55Z
dc.descriptionWe analyze the one loop corrections to hadronic Z decays in an R-parity violating extension to the Minimal Supersymmetric Standard Model (MSSM). Performing a global fit to all the hadronic observables at the Z-peak, we obtain stringent constraints on the R-violating couplings constants lambda' and lambda''. As a result of the strong constraints from the b asymmetry parameters A_b and A_FB(b), we find that the couplings lambda'{i31}, lambda'{i32}, and lambda''{321} are ruled out at the 1 sigma level, and that lambda'{i33} and lambda''{33i} are ruled out at the 2 sigma level. We also obtain Bayesian confidence limits for the R-violating couplings.
dc.description30 pages, 19 postscript figures, REVTeX, new section 8 on Bayesian confidence limits added
dc.identifierhttps://arxiv.org/abs/hep-ph/9911479
dc.identifierhttp://arxiv.org/abs/hep-ph/9911479
dc.identifierPhys.Rev. D62 (2000) 015003
dc.identifierdoi:10.1103/PhysRevD.62.015003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/49659
dc.subjectHigh Energy Physics - Phenomenology
dc.titleConstraints on R-parity violating couplings from LEP/SLD hadronic observables
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