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Electroweak Precision Measurements with Leptons

James E. Brau

hep-exarXiv:hep-ex/9911040

Abstract

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 2θWeff = 0.23099 0.00026, and the combined SLD/LEP lepton-based value is 0.23119 0.00020. This value differs by over 3σ from the comparable quark-based value.

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