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Published February 5, 2004 | Published
Book Section - Chapter Open

Recent Results from the SAMPLE Experiment

Abstract

The previous two SAMPLE experiments yielded a measurement of the axial e-N form factor G^e_A substantially different from the theoretical estimate. In order to confirm this observation, a third SAMPLE experiment was carried out at a lower beam energy of 125 MeV (Q^2 = 0.038 (GeV/c)^2) on a deuterium target. The data analysis is now at the final stage and the results are consistent with the theoretical prediction of the axial form factor G^e_A. Also, revaluation of the background dilution factor and the electromagnetic radiative correction for the 200 MeV deuterium data lead to updated results, which are also consistent with the theoretical prediction.

Additional Information

© 2004 American Institute of Physics. Issue Date: 5 February 2004.

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