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arXiv · hep-ph/9305233

The off-Shell Electromagnetic Vertex of the Nucleon in Chiral Perturbation Theory

J. W. Bos·J. H. Koch
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Abstract

We study the electromagnetic vertex of a nucleon in next-to-leading order chiral perturbation theory (CPT). We consider the case where one of the nucleons at the $γ$NN vertex is off its mass shell. We define relevant measures for the off-shell dependence in the limited kinematical range allowed, and analyze their expansion in the pion mass. The leading nonanalytic contributions are calculated to estimate their size.

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J. W. Bos, J. H. Koch. 1993-05-10. The off-Shell Electromagnetic Vertex of the Nucleon in Chiral Perturbation Theory. https://doi.org/10.1016/0375-9474(93)90054-2

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