Electroweak Precision Measurements with Leptons

1999/11/26 by James E. Brau, Brau, James E.
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9911040

presented at the `International Europhysics Conference On High-Energy Physics' (EPS-HEP 99), Tampere, Finland, July, 1999

arxiv created 1999/11/26 · openalex publication_date 1999/11/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The precision measurements of lepton electroweak parameters at SLD and LEP are reviewed and discussed. The updated SLD weak mixing angle measurement from A_LR and the lepton left-right forward-backward asymmetries is sin²θ_W^eff = 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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