Extraction of Transition Form Factors for Nucleon Resonances within a Coupled-Channels Model
Abstract
We explain how an analytic continuation we have developed recently is applied to determine the residues of the nucleon resonance poles within a dynamical coupled-channel model of meson-baron reactions. A procedure for evaluating the electromagnetic N-N* transition form factors at resonance poles is developed. Illustrative results of the obtained N* -> pi N, gamma N transition form factors for P11, P33, and D13 nucleon resonances are presented and compared with previous results.
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