Constraints on R-parity violating couplings from lepton universality

dc.contributor.authorLebedev, O.en
dc.contributor.authorLoinaz, Williamen
dc.contributor.authorTakeuchi, Tatsuen
dc.contributor.departmentPhysicsen
dc.date.accessioned2016-10-18T23:51:15Zen
dc.date.available2016-10-18T23:51:15Zen
dc.date.issued2000-06-01en
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 (MSSM). We find that lepton universality violation in the Z line–shape variables alone would strengthen the bounds on the magnitudes of the λ′ couplings, but a global fit on all data leaves the bounds virtually unchanged at |λ′<sub>33k</sub>| ≤ 0.42 and |λ′<sub>23k</sub>| ≤ 0 .50 at the 2 σ level. Bounds from W decays are less stringent: |λ′<sub>33k</sub>| ≤ 2.4 at 2 σ, 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 Υ invisible width.en
dc.description.versionPublished versionen
dc.format.extent14 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.61.115005en
dc.identifier.issn0556-2821en
dc.identifier.issue11en
dc.identifier.urihttp://hdl.handle.net/10919/73269en
dc.identifier.volume61en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000087284800066&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAstronomy & Astrophysicsen
dc.subjectPhysics, Particles & Fieldsen
dc.subjectPhysicsen
dc.subjectFERMION PAIR PRODUCTIONen
dc.subjectSUPERSYMMETRIC MODELSen
dc.subjectQED CORRECTIONSen
dc.subjectSTANDARD MODELen
dc.subjectOSCILLATIONen
dc.subjectBREAKINGen
dc.titleConstraints on R-parity violating couplings from lepton universalityen
dc.title.serialPhysical Review Den
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/Physicsen

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