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Two-photon exchange amplitudes for elastic scattering at from experimental data
Phys. Rev. D 83, 057501 – Published 1 March, 2011
DOI: https://doi.org/10.1103/PhysRevD.83.057501
Abstract
We extract two-photon exchange amplitudes for the elastic electron-proton scattering at from the unpolarized cross section and recent polarization transfer measurements. There are three independent amplitudes, but only one of them, , can be determined with a reasonable accuracy (about 10%). The result is in good agreement with theoretical predictions. Rough estimates for two other amplitudes are obtained.
Article Text
References (9)
- J. Arrington, Phys. Rev. C 71, 015202 (2005).
- D. Borisyuk and A. Kobushkin, Phys. Rev. C 76, 022201(R) (2007).
- M. Meziane et al., arXiv:1012.0339.
- V. Tvaskis et al., Phys. Rev. C 73, 025206 (2006).
- J. Arrington, W. Melnitchouk, and J. A. Tjon, Phys. Rev. C 76, 035205 (2007).
- J. Litt et al., Phys. Lett. B 31, 40 (1970); R. C. Walker et al., Phys. Rev. D 49, 5671 (1994); L. Andivahis et al., ibid. 50, 5491 (1994); M. E. Christy et al., Phys. Rev. C 70, 015206 (2004); I. A. Qattan, Ph.D. thesis, Northwestern University arXiv:nucl-ex/0610006.
- D. Borisyuk and A. Kobushkin, Phys. Rev. C 78, 025208 (2008).
- D. Borisyuk and A. Kobushkin (unpublished).
- J. Guttmann, N. Kivel, M. Meziane, and M. Vanderhaeghen, arXiv:1012.0564.