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Title: Two Photon Exchange for Exclusive Pion Electroproduction

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.
Authors:
 [1] ;  [2] ;  [3]
  1. George Washington U.
  2. Memorial University of Newfoundland, Newfoundland, Canada
  3. Acadia University, Nova Scotia, Canada
Publication Date:
OSTI Identifier:
1093440
Report Number(s):
JLAB-THY-12-1524; DOE/OR/23177-2776; arXiv:1207.1767
DOE Contract Number:
AC05-06OR23177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 88; Journal Issue: 05
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS