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

We 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'...

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Detalles Bibliográficos
Autores principales: Lebedev, O, Loinaz, W, Takeuchi, T
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.62.015003
http://cds.cern.ch/record/409502
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author Lebedev, O
Loinaz, W
Takeuchi, T
author_facet Lebedev, O
Loinaz, W
Takeuchi, T
author_sort Lebedev, O
collection CERN
description We 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.
id cern-409502
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-4095022019-09-30T06:29:59Zdoi:10.1103/PhysRevD.62.015003http://cds.cern.ch/record/409502engLebedev, OLoinaz, WTakeuchi, TConstraints on R-parity violating couplings from LEP/SLD hadronic observablesParticle Physics - PhenomenologyWe 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.hep-ph/9911479VPI-IPPAP-99-10oai:cds.cern.ch:4095021999-11-26
spellingShingle Particle Physics - Phenomenology
Lebedev, O
Loinaz, W
Takeuchi, T
Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title_full Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title_fullStr Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title_full_unstemmed Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title_short Constraints on R-parity violating couplings from LEP/SLD hadronic observables
title_sort constraints on r-parity violating couplings from lep/sld hadronic observables
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.62.015003
http://cds.cern.ch/record/409502
work_keys_str_mv AT lebedevo constraintsonrparityviolatingcouplingsfromlepsldhadronicobservables
AT loinazw constraintsonrparityviolatingcouplingsfromlepsldhadronicobservables
AT takeuchit constraintsonrparityviolatingcouplingsfromlepsldhadronicobservables

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