期刊
PHYSICS LETTERS B
卷 681, 期 1, 页码 26-31出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2009.09.052
关键词
Meson-baryon scattering; Baryon resonances; Dynamically generated resonances
资金
- DFG (Deutsche Forschungsgemeinschaft) [GZ: DO 1302/1-1]
- Helmholtz Association through funds provided to the virtual institute Spin and Strong QCD [VH-VI-231]
- EU-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter [227431]
- Alexander von Humboldt Foundation
- COSY FFE [41445282 (COSY-58)]
The separation of background and resonance contributions in pion-nucleon scattering is an often discussed issue. We investigate to what extent the background can be separated from the pole contribution. For illustration we use results from an analytic model for the meson-baryon interaction derived from meson exchange. We focus oil the two distinct cases of an elastic and a highly inelastic resonance, namely the Delta(1232) and the Delta*(1700). Our results are also relevant for studies of dynamically generated resonances and attempts to extract bare quantities from hadronic models to be compared to quark model results. (C) 2009 Elsevier B.V. All rights reserved.
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