vix.ing · top · new · best · stats · spec

New Measurement of Ab at the Z Resonance using a Vertex-Charge Technique

1999/07/27 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) #Nuclear Physics and Applications #X-ray Spectroscopy and Fluorescence Analysis #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9907050

8 pages, 0 figures. Paper contributed to EPS-HEP 99 and Lepton-Photon Symposium 1999

arxiv created 1999/07/27 · openalex publication_date 1999/07/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We present a new preliminary measurement of the parity-violation parameter Ab using a self-calibrating vertex-charge technique. In the SLD experiment we observe hadronic decays of polarized Z bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAC Linear Collider. A sample of bb events is selected using the topologically reconstructed mass of B hadrons. From out 1996-8 data sample of approximately 400,000 hadronic Z decays, we obtain Ab = 0.897 +/- 0.027 (stat) +0.036/-0.034 (syst).

Related