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

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

G0

Collaboration

•

D. Androic
(
- Zagreb U.
)

Sep, 2009

5 pages

Published in:

Phys.Rev.Lett. 104 (2010) 012001

e-Print:

0909.5107 [nucl-ex]

DOI:

10.1103/PhysRevLett.104.012001

Report number:

JLAB-PHY-09-1128

Experiments:

JLAB-E-00-006

View in:

reference search156 citations

Citations per year

Abstract: (arXiv)

We have measured parity-violating asymmetries in elastic electron-proton and quasi-elastic electron-deuteron scattering at Q^2 = 0.22 and 0.63 GeV^2. They are sensitive to strange quark contributions to currents in the nucleon, and to the nucleon axial 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 current at these four-momentum transfers.

Note:

5 pages, 2 figures, changed references, typo, and content

25.30.Bf
13.60.-r
14.20.Dh
nucleon: form factor
form factor: electric
form factor: magnetic
form factor: axial
current: axial
parity: violation
asymmetry

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