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Parity-violating Electron Deuteron Scattering and the Proton's Neutral Weak Axial Vector Form Factor

SAMPLE collaboration·T. M. Ito
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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(sys)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.

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SAMPLE collaboration, T. M. Ito. 2003-10-17. Parity-violating Electron Deuteron Scattering and the Proton's Neutral Weak Axial Vector Form Factor. https://doi.org/10.1103/physrevlett.92.102003

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