Polarized Bhabha Scattering and a Precision Measurement of the Electron   Neutral Current Couplings
  We present the first measurement of the left-right asymmetry in Bhabha scattering with a polarized electron beam. The effective electron vector and axial vector couplings to the Z0 are extracted from a combined analysis of the polarized Bhabha scattering data and the left-right asymmetry previously published by this collaboration. 
the SLD Collaboration