Journal
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
Volume 95, Issue -, Pages 245-278Publisher
ELSEVIER
DOI: 10.1016/j.ppnp.2017.03.004
Keywords
Two-photon exchange; Radiative corrections; Form factors
Categories
Funding
- NSERC (Canada)
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC05-06OR23177, DE-SC0013620, DE-FG02-94ER40818]
- Gus Weiss endowment at George Washington University
- Jefferson Lab
- U.S. Department of Energy (DOE) [DE-SC0013620] Funding Source: U.S. Department of Energy (DOE)
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We review recent theoretical and experimental progress on the role of two-photon exchange (TPE) in electron-proton scattering at low to moderate momentum transfers. We make a detailed comparison and analysis of the results of competing experiments on the ratio of e(+) p to e(-) p elastic scattering cross sections, and of the theoretical calculations describing them. A summary of the current experimental situation is provided, along with an outlook for future experiments. (C) 2017 Elsevier B.V. All rights reserved.
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