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U.S. Department of Energy
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Electroweak precision measurement with leptons

Technical Report ·
DOI:https://doi.org/10.2172/753239· OSTI ID:753239
The precision measurements of lepton electroweak parameters at SLD and LEP are reviewed and discussed. The updated SLD weak mixing angle measurement from ALR and the lepton left-right forward-backward asymmetries is sin{sup 2} {theta}{sup eff}/W = 0.23099 {+-} 0.00026, and the combined SLD/LEP lepton-based value is 0.23119 {+-} 0.00020. This value differs by over 3{sigma} from the comparable quark-based value.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
753239
Report Number(s):
SLAC-PUB-8311
Country of Publication:
United States
Language:
English