Gauge-invariant meson photoproduction with extended nucleons

Details Gauge-invariant meson photoproduction with extended nucleons Gauge-invariant meson photoproduction with extended nucleons

1998-11-09

arxiv.org/abs/nucl-th/9811024v1

Physics

Nuclear Physics

Nuclear Theory

4 pages; Contribution to the Proceedings of Baryons '98, Bonn, September 22-26, 1998

Scientific paper

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 $p(\gamma,K^+)\Lambda$ are given.

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