Two Photon Exchange for Exclusive Pion Electroproduction
Journal Article
·
· Physical Review D
- George Washington U.
- Memorial University of Newfoundland, Newfoundland, Canada
- Acadia University, Nova Scotia, Canada
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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1093440
- Report Number(s):
- JLAB-THY-12-1524; DOE/OR/23177-2776; arXiv:1207.1767
- Journal Information:
- Physical Review D, Vol. 88, Issue 05
- Country of Publication:
- United States
- Language:
- English
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