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dc.contributorVirginia Tech
dc.contributor.authorLebedev, O.
dc.contributor.authorLoinaz, W.
dc.contributor.authorTakeuchi, T.
dc.date.accessioned2013-12-18T19:46:40Z
dc.date.available2013-12-18T19:46:40Z
dc.date.issued2000-07-01
dc.identifier.citationLebedev, O ; Loinaz, W ; Takeuchi, T, JUL 1 2000. “Constraints on R-parity violating couplings from CERN LEP and SLAG SLD hadronic observables,” PHYSICAL REVIEW D 62(1): 015003. DOI: 10.1103/PhysRevD.62.015003en_US
dc.identifier.issn0556-2821
dc.identifier.urihttp://hdl.handle.net/10919/24749
dc.description.abstractWe analyze the one loop corrections to hadronic Z decays in an R-parity violating extension to the minimal supersymmetric standard model. Performing a global fit to all the hadronic observables at the Z peak, we obtain stringent constraints on the R-violating coupling constants lambda' and lambda". The presence of these couplings worsens the agreement with the data relative to the standard model. The strongest constraints come from the b asymmetry parameters A(b) and A(FB)(b) From a classical statistical analysis we find that the couplings lambda'(131), lambda'(132), and lambda"(321) are ruled out at the 1 sigma level, and that lambda'(133) and lambda"(33i) are ruled out at the 2 sigma level. A Bayesian statistical analysis weakens the bounds, but the corresponding chi(2)'s are uncomfortably large, rendering the relevance of the Bayesian bounds suspect.en_US
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjectfermion pair production
dc.subjectsupersymmetric models
dc.subjectqed corrections
dc.subjectoscillation
dc.subjectresonance
dc.subjectbounds
dc.subjectAstronomy & Astrophysics
dc.subjectPhysics
dc.titleConstraints on R-parity violating couplings from CERN LEP and SLAG SLD hadronic observables
dc.typeArticle
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevD.62.015003
dc.date.accessed2013-12-16
dc.title.serialPhysical Review D
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.62.015003


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