Photoproduction of pions and properties of baryon resonances from a Bonn-Gatchina partial-wave analysis |
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| Authors: | A. V. Anisovich E. Klempt V. A. Nikonov M. A. Matveev A. V. Sarantsev U. Thoma |
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| Affiliation: | 1. Helmholtz-Institut für Strahlen- und Kernphysik, Universit?t Bonn, Bonn, Germany
2. Petersburg Nuclear Physics Institute, Gatchina, Russia
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| Abstract: | Masses, widths and photocouplings of baryon resonances are determined in a coupled-channel partial-wave analysis of a large variety of data. The Bonn-Gatchina partial-wave formalism is extended to include a decomposition of t and u exchange amplitudes into individual partial waves. The multipole transition amplitudes for $ gamma$ p $ rightarrow$ p $ pi^{0}_{}$ and $ gamma$ p $ rightarrow$ n $ pi^{+}_{}$ are given and compared to results from other analyses. |
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