Determination of two-photon exchange amplitudes from elastic electron-proton scattering data

Details Determination of two-photon exchange amplitudes from elastic electron-proton scattering data Determination of two-photon exchange amplitudes from elastic electron-proton scattering data

2010-12-02

arxiv.org/abs/1012.0564v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 figures, updated error analysis

Scientific paper

Using the available cross section and polarization data for elastic
electron-proton scattering, we provide an extraction of the two-photon exchange
amplitudes at a common value of four-momentum transfer, around Q^2 = 2.5 GeV^2.
This analysis also predicts the e^+ p / e^- p elastic scattering cross section
ratio, which will be measured by forthcoming experiments.

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