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Gauge-invariant meson photoproduction with extended nucleons

H. Haberzettl·C. Bennhold·T. Mart·T. Feuster
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Abstract

The general gauge-invariant photoproduction formalism given by Haberzettl is applied to kaon photoproduction off the nucleon at the tree level, with form factors describing composite nucleons. Numerical results show that this gauge-invariance procedure, when compared to Ohta's, leads to a much improved description of experimental data. Predictions for the new Bonn SAPHIR data for $p(γ,K^+)Λ$ are given.

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H. Haberzettl, C. Bennhold, T. Mart, T. Feuster. 1998-11-09. Gauge-invariant meson photoproduction with extended nucleons. https://arxiv.org/abs/nucl-th/9811024

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