Final Results of the GEp-III Experiment and the Status of the Proton Form Factors

Abstract

The recently published final results of experiment E04-108 in Jefferson Lab Hall C extend the recoil polarization measurements of the ratio of the proton electric and magnetic form factors to $Q^2=8.5$ GeV${}^2$, an increase in $Q^2$ coverage of more than 50\%. A global fit of $G_E^p$ and $G_M^p$ to selected data for electron-proton elastic scattering cross sections and polarization observables is presented, illustrating the statistical impact of the new results.

arXiv commentTo appear in Proceedings of the 4th Workshop on Exclusive Reactions at High Momentum Transfer

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