Parity-Violating Electron Deuteron Scattering and the Proton's Neutral Weak Axial Vector Form Factor
Journal Article
·
· Physical Review Letters
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 = z3.51±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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 955477
- Report Number(s):
- JLAB-THY-04-46; nucl-ex/0310001; DOE/ER/40150-3041
- Journal Information:
- Physical Review Letters, Vol. 92
- Country of Publication:
- United States
- Language:
- English
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