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arXiv · 1207.1767

Two Photon Exchange for Exclusive Pion Electroproduction

A. Afanasev·A. Aleksejevs·S. Barkanova
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Abstract

We perform detailed calculations of two-photon-exchange QED corrections to the cross section of pion electroproduction. The results are obtained with and without the soft-photon approximation; analytic expressions for the radiative corrections are derived. The relative importance of the two-photon correction is analyzed for the kinematics of several experiments at Jefferson Lab. A significant, over 20%, effect due to two-photon exchange is predicted for the backward angles of electron scattering at large transferred momenta.

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A. Afanasev, A. Aleksejevs, S. Barkanova. 2012-07-07. Two Photon Exchange for Exclusive Pion Electroproduction. https://doi.org/10.1103/physrevd.88.053008

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