Measurement of the Polarization in Elastic Electron-Proton Scattering
T. D. Powell(Lawrence Berkeley National Laboratory), M. Borghini(University of California, Berkeley), Owen Chamberlain(Lawrence Berkeley National Laboratory), R. Fuzesy(University of California, Berkeley), Charles G. Morehouse(University of California, Berkeley), S. E. Rock(University of California, Berkeley), Gilbert Shapiro(University of California, Berkeley), H. Weisberg(University of California, Berkeley), R.L.A. Cottrell(University of California, Berkeley), John Litt(Lawrence Berkeley National Laboratory), Luke W. Mo(Lawrence Berkeley National Laboratory), Richard E. Taylor(Lawrence Berkeley National Laboratory)
Cited by 29Open Access
Abstract
We have measured the asymmetry in the elastic scattering of electrons from a polarized proton target. An interference between the imaginary part of the two-photon-exchange amplitude and the one-photon-exchange amplitude could produce a polarization effect. The results indicate no asymmetry within the experimental accuracy of 1 to 2% at four-momentum-transfer-squared values values of o.38, 0.59, and 0.98 ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$.
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