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Title: 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