The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer
Journal Article
·
OSTI ID:836264
We estimate the two-photon exchange contribution to elastic electron-proton scattering at large momentum transfer by using a quark-parton representation of virtual Compton scattering. We thus can relate the two-photon exchange amplitude to the generalized parton distributions which also enter in other wide angle scattering processes. We find that the interference of one- and two-photon exchange contribution is able to substantially resolve the difference between electric form factor measurements from Rosenbluth and polarization transfer experiments.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 836264
- Report Number(s):
- JLAB-THY-05-297; DOE/ER/40150-3071; TRN: US0500555
- Resource Relation:
- Other Information: No journal information given for this preprint; PBD: 1 Jan 2005
- Country of Publication:
- United States
- Language:
- English
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