The Dynamical Structure of the Delta-Resonance and its Effect on Two- and Three-Nucleon Systems

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The pion-nucleon interaction in the P33 partial wave is assumed to proceed simultaneously through the excitation of the Delta-isobar and through a phenomenologically introduced non-resonant background potential. The introduction of the background potential allows a more realistic parameterization of the pion-nucleon-Delta vertex compared with the previously used one without background. It also modifies the propagation of the Delta-isobar in the nuclear medium and gives rise to novel effective nucleon-Delta interactions. Their consequences on predictions for observables in the two-nucleon system at intermediate energies and in the three-nucleon bound state are studied.
24 pages RevTeX, 10 figures PostScript

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Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/82639

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/9603034
 http://arxiv.org/abs/nucl-th/9603034

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arXiv