APS » PROLA » Phys. Rev. Lett. » Volume 84 » Issue 6

Phys. Rev. Lett. 84, 1106 - 1109 (2000)

Parity Violation in Elastic Electron-Proton Scattering and the Proton's Strange Magnetic Form Factor
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D. T. Spayde et al. (SAMPLE Collaboration)
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Received 15 September 1999

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.


©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v84/p1106
DOI: 10.1103/PhysRevLett.84.1106
PACS: 13.60.Fz, 11.30.Er, 13.40.Gp, 14.20.Dh

* Present address: Department of Physics, College of William and Mary, Williamsburg, VA 23187.

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