Phys. Rev. Lett. 92, 102003 (2004) [4 pages]Parity-Violating Electron Deuteron Scattering and the Proton’s Neutral Weak Axial Vector Form FactorReceived 30 September 2003; published 10 March 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.102003
DOI:
10.1103/PhysRevLett.92.102003
PACS:
12.15.Lk, 11.30.Er, 13.60.–r, 14.20.Dh
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