Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1996-09-29
Phys.Rev.Lett.78:17-21,1997
Physics
High Energy Physics
High Energy Physics - Experiment
14 pages, RevTeX document with 1 eps (included) figure. Also available in gzip-compressed postscript form (64 Kb) at ftp://f
Scientific paper
10.1103/PhysRevLett.78.17
We present the first measurement of the left-right charge asymmetry A_Q^{obs} in hadronic Z boson decays. This was performed at E_cm = 91.27 GeV with the SLD at the SLAC Linear Collider with a polarized electron beam. Using 89838 events, we obtain A_Q^{obs}=0.225+-0.056+-0.019 which leads to a measurement of the electron left-right asymmetry parameter, A_e=0.162+-0.041+-0.014, and sin^2(theta_eff)=0.2297+-0.0052 +-0.0018. Also, the A_Q^{obs} measurement combined with the left-right cross section asymmetry determines A_e independently of the value of the electron-beam polarization.
Abe Kanshi
Abt I.
SLD Collaboration
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