Abstract
We extract nucleon resonance parameters from an effective Lagrangian model employing the -matrix approximation. To this end we analyze simultaneously all available data for reactions involving the final states and in the energy range GeV. The background contributions are generated consistently from the relevant Feynman amplitudes, which significantly reduces the number of free parameters. The sensitivity of the parameters upon the –partial-wave analysis and the details of the Lagrangians and form factors used are discussed.
- Received 29 August 1997
DOI:https://doi.org/10.1103/PhysRevC.58.457
©1998 American Physical Society