Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor

Abstract

We report a new measurement of the parity-violating asymmetry in elastic electron scattering from the proton at backward scattering angles. This asymmetry is sensitive to the strange magnetic form factor of the proton as well as electroweak axial radiative corrections. The new measurement of A=-4.92 +- 0.61 +- 0.73 ppm provides a significant constraint on these quantities. The implications for the strange magnetic form factor are discussed in the context of theoretical estimates for the axial corrections.

4 pages, 3 figures, submitted to Physical Review Letters, Sept 1999

References in corpus (7)

• Intermediate-Energy Semileptonic Probes of the Hadronic Neutral Current
• Measurement of the Proton's Neutral Weak Magnetic Form Factor
• A measurement of the axial form factor of the nucleon by the p(e,e'pi+)n reaction at W=1125 MeV
• Flavor Symmetry Breaking in the 1/N Expansion
• Lattice Calculation of the Strangeness Magnetic Moment of the Nucleon
• Spin Contents of Nucleons with SU(3) Breaking
• Strange Form Factors of Baryons

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• The SAMPLE Experiment and Weak Nucleon Structure
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• Parity Violation in Proton-Proton Scattering at 221 MeV
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• Hadronic Parity-Violation on the Lattice
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