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Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment (CROSBI ID 158838)

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Androić, Darko ; ... ; Ševa, Tomislav ; ... Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment // Physical review letters, 104 (2010), 1; 012001-1-012001-5. doi: 10.1103/PhysRevLett.104.012001

Podaci o odgovornosti

Androić, Darko ; ... ; Ševa, Tomislav ; ...

engleski

Strange Quark Contributions to Parity-Violating Asymmetries in the Backward Angle G0 Electron Scattering Experiment

We have measured parity-violating asymmetries in elastic electron-proton and quasielastic electron deuteron scattering at Q2 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 <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 current at these four-momentum transfers.

parity-violating asymmetries; axial-vector current; strange quark; charge and magnetic nucleon form factors

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Podaci o izdanju

104 (1)

2010.

012001-1-012001-5

objavljeno

0031-9007

10.1103/PhysRevLett.104.012001

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Fizika

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