title: Parity-violating electron deuteron scattering and the proton's neutral weak axial vector form factor.
abstract: We report on a new measurement of the parity-violating asymmetry in quasielastic electron scattering from the deuteron at backward angles at Q2=0.038 (GeV/c)2. This quantity provides a determination of the neutral weak axial vector form factor of the nucleon, which can potentially receive large electroweak corrections. The measured asymmetry A=-3.51+/-0.57 (stat)+/-0.58 (syst) ppm is consistent with theoretical predictions. We also report on updated results of the previous experiment at Q2=0.091 (GeV/c)2, which are also consistent with theoretical predictions.
authors.affiliation: W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA. tito@krl.caltech.edu
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