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Constraints on R-parity violating couplings from lepton universality

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dc.contributor.authorLebedev, O.en
dc.contributor.authorLoinaz, Williamen
dc.contributor.authorTakeuchi, Tatsuen
dc.contributor.departmentInstitute for Particle, Nuclear and Astronomical Sciences (IPNAS)en
dc.contributor.departmentPhysicsen
dc.date.accessed2013-12-16en
dc.date.accessioned2013-12-18T19:46:40Zen
dc.date.available2013-12-18T19:46:40Zen
dc.date.issued2000-07-01en
dc.description.abstractWe analyze the one loop corrections to leptonic W and Z decays in an R-parity violating extension to the minimal supersymmetric standard model. We find that lepton universality violation in the Z line-shape variables alone would strengthen the bounds on the magnitudes of the lambda' couplings, but a global fit on all data leaves the bounds virtually unchanged at \lambda'(33k)\less than or equal to 0.42 and \lambda'(23k)\less than or equal to 0.50 at the 2 sigma level. Bounds from W decays are less stringent: \lambda'(33k)\less than or equal to 2.4 at 2 sigma, as a consequence of the weaker Fermilab experimental bounds on lepton universality violation in W decays. We also point out the potential of constraining R-parity violating couplings from the measurement of the Y invisible width.en
dc.identifier.citationLebedev, O ; Loinaz, W ; Takeuchi, T, JUN 1 2000. “Constraints on R-parity violating couplings from lepton universality,” PHYSICAL REVIEW D 61(11): 115005. DOI: 10.1103/PhysRevD.61.115005en
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.61.115005en
dc.identifier.issn0556-2821en
dc.identifier.urihttp://hdl.handle.net/10919/24750en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevD.61.115005en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectfermion pair productionen
dc.subjectsupersymmetric modelsen
dc.subjectqed correctionsen
dc.subjectstandard modelen
dc.subjectoscillationen
dc.subjectbreakingen
dc.subjectAstronomy & Astrophysicsen
dc.subjectPhysicsen
dc.titleConstraints on R-parity violating couplings from lepton universalityen
dc.title.serialPhysical Review Den
dc.typeArticle - Refereeden

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