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arXiv · 0707.1861

Global analysis of proton elastic form factor data with two-photon exchange corrections

J. Arrington·W. Melnitchouk·J. A. Tjon
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Abstract

We use the world's data on elastic electron--proton scattering and calculations of two-photon exchange effects to extract corrected values of the proton's electric and magnetic form factors over the full Q^2 range of the existing data. Our analysis combines the corrected Rosenbluth cross section and polarization transfer data, and is the first extraction of G_Ep and G_Mp including explicit two-photon exchange corrections and their associated uncertainties. In addition, we examine the angular dependence of the corrected cross sections, and discuss the possible nonlinearities of the cross section as a function of epsilon.

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J. Arrington, W. Melnitchouk, J. A. Tjon. 2007-08-02. Global analysis of proton elastic form factor data with two-photon exchange corrections. https://doi.org/10.1103/physrevc.76.035205

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