Model Dependence of the Properties of S11 Baryon Resonances

Abstract

The properties of baryon resonances are extracted from a complicated process of fitting sophisticated, empirical models to data. The reliability of this process comes from the quality of data and the robustness of the models employed. With the large of amount of data coming from recent experiments, this is an excellent time for a study of the model dependence of this extraction process. A test case is chosen where many theoretical details of the model are required, the S11 partial wave. The properties of the two lowest N* resonances in this partial wave are determined using various models of the resonant and non-resonant amplitudes.

arXiv comment24 pages, 10 figures; revised fits with error estimates, expanded comparison between CMB and K-matrix models

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Cited by in corpus (7)

• Transition form factors of the N*(1535) as a dynamically generated resonance
• The piN --> etaN data demand the existence of N(1710) P11 resonance reducing the 1700 MeV continuum ambiguity
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• A chiral quark model for meson electro-production in the S11 partial wave
• Mesonic Content of the Nucleon and the Roper Resonance
• Correlations of $\mathbf{\pi N}$ Partial Waves for Multi-Reaction Analyses
• πN and ηp deexcitation channels of the N^* and Δbaryonic resonances between 1470 and 1680 MeV