1999/07/29 by K. Abe, The SLD Collaboration, Abe, K.
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Electron Spin Resonance Studies #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/9907063
8 pages, 0 figures. Paper submitted to EPS-HEP99 and Lepton-Photon '99
arxiv created 1999/07/29 · openalex publication_date 1999/07/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We present a new preliminary combination of measurements of the parity-violation parameter Ab made by the SLD collaboration using various experimental techniques. The techniques differ in detail, but in general a sample of bb events is selected or enhanced by using the topologically reconstructed mass of the separated vertices formed by decaying B hadrons. The direction of the b(bbar) quark is signed by one of four final state tags: jet charge, vertex charge, leptons, or identified K+- from the b vertex. We account for statistical and systematic correlations between the four analyses to arrive at our combined result: Ab=0.905 +/- 0.017 stat +/- 0.020 (syst).