Two Photon Exchange for Exclusive Pion Electroproduction

ORAL

Abstract

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

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Authors

  • A. Afanasev

    • George Washington University
    • The George Washington University

  • Aleksandrs Aleksejevs

    • Memorial University, Canada

  • Svetlana Barkanova

    • Acadia University, Canada