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arXiv · hep-ph/9309229

The Low-Energy Theorem of Pion Photoproduction in Soliton Models of the Nucleon

B. Schwesinger·H. Walliser
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Abstract

We derive an analytic expression for the Kroll-Ruderman amplitude up to the order 1/N_C for general Skyrme-type models of the nucleon. Due to the degeneracy of intermediate N- and Delta-states we find deviations from the standard low-energy theorem for the photoproduction of neutral pions.

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B. Schwesinger, H. Walliser. 1993-09-06. The Low-Energy Theorem of Pion Photoproduction in Soliton Models of the Nucleon. https://doi.org/10.1016/0375-9474(94)90961-x

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