Compton scattering from the proton at NLO in the chiral expansion

Details Compton scattering from the proton at NLO in the chiral expansion Compton scattering from the proton at NLO in the chiral expansion

2001-01-25

arxiv.org/abs/nucl-th/0101057v2

Phys.Rev.C63:064608,2001; Erratum-ibid.C66:039902,2002

Physics

Nuclear Physics

Nuclear Theory

13 pages RevTeX, 7 eps figures. Revised version correcting some errors, principally in the coding of 3rd order contributions;

Scientific paper

10.1103/PhysRevC.63.064608

We present calculations of differential cross sections for Compton scattering from the proton, using amplitudes calculated to fourth order in heavy baryon chiral perturbation theory. We compare with available data up to 200 MeV. We find that the agreement for angles below 90 degree is acceptable over the whole energy range, but that at more backward angles the agreement decreases above about 100 MeV, and fails completely above the photoproduction threshold.

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