Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.012001
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- CNRS (France)
- DOE (U.S.)
- NSERC (Canada)
- NSF (U.S.)
- Direct For Mathematical & Physical Scien
- Division Of Physics [855569, 0801305, 855538] Funding Source: National Science Foundation
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We have measured parity-violating asymmetries in elastic electron-proton and quasielastic electron-deuteron scattering at Q(2) = 0.22 and 0.63 GeV2. They are sensitive to strange quark contributions to currents in the nucleon and the nucleon axial-vector current. The results indicate strange quark contributions of less than or similar to 10% of the charge and magnetic nucleon form factors at these four-momentum transfers. We also present the first measurement of anapole moment effects in the axial-vector cur-rent at these four-momentum transfers.
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