Constraints on R-parity violating couplings from lepton universality
dc.contributor.author | Lebedev, O. | en |
dc.contributor.author | Loinaz, William | en |
dc.contributor.author | Takeuchi, Tatsu | en |
dc.contributor.department | Physics | en |
dc.date.accessioned | 2016-10-18T23:51:15Z | en |
dc.date.available | 2016-10-18T23:51:15Z | en |
dc.date.issued | 2000-06-01 | en |
dc.description.abstract | We 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.version | Published version | en |
dc.format.extent | 14 pages | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.doi | https://doi.org/10.1103/PhysRevD.61.115005 | en |
dc.identifier.issn | 0556-2821 | en |
dc.identifier.issue | 11 | en |
dc.identifier.uri | http://hdl.handle.net/10919/73269 | en |
dc.identifier.volume | 61 | en |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.uri | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000087284800066&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1 | en |
dc.rights | In Copyright | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject | Astronomy & Astrophysics | en |
dc.subject | Physics, Particles & Fields | en |
dc.subject | Physics | en |
dc.subject | FERMION PAIR PRODUCTION | en |
dc.subject | SUPERSYMMETRIC MODELS | en |
dc.subject | QED CORRECTIONS | en |
dc.subject | STANDARD MODEL | en |
dc.subject | OSCILLATION | en |
dc.subject | BREAKING | en |
dc.title | Constraints on R-parity violating couplings from lepton universality | en |
dc.title.serial | Physical Review D | en |
dc.type | Article - Refereed | en |
dc.type.dcmitype | Text | en |
pubs.organisational-group | /Virginia Tech | en |
pubs.organisational-group | /Virginia Tech/All T&R Faculty | en |
pubs.organisational-group | /Virginia Tech/Science | en |
pubs.organisational-group | /Virginia Tech/Science/COS T&R Faculty | en |
pubs.organisational-group | /Virginia Tech/Science/Physics | en |