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