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Title: The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
836264
Report Number(s):
JLAB-THY-05-297; DOE/ER/40150-3071
TRN: US0500555
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Resource Relation:
Other Information: No journal information given for this preprint; PBD: 1 Jan 2005
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; COMPTON EFFECT; FORM FACTORS; MOMENTUM TRANSFER; PARTONS; POLARIZATION; SCATTERING

Citation Formats

Afanasev, Andrei V, Brodsky, Stanley J, Carlson, Carl E, Chen, Yu-Chun, and Vanderhaeghen, Marc. The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer. United States: N. p., 2005. Web.
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Afanasev, Andrei V, Brodsky, Stanley J, Carlson, Carl E, Chen, Yu-Chun, & Vanderhaeghen, Marc. The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer. United States.
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Afanasev, Andrei V, Brodsky, Stanley J, Carlson, Carl E, Chen, Yu-Chun, and Vanderhaeghen, Marc. Sat . "The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer". United States. https://www.osti.gov/servlets/purl/836264.
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@article{osti_836264,
title = {The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer},
author = {Afanasev, Andrei V and Brodsky, Stanley J and Carlson, Carl E and Chen, Yu-Chun and Vanderhaeghen, Marc},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}
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