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The baryonic spectrum in a constituent quark model including a three-body force |
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| Authors: | B. Desplanques C. Gignoux B. Silvestre-Brac P. González J. Navarro S. Noguera |
| Affiliation: | 1. Institut des Sciences Nucléaires, F-38026, Grenoble Cedex, France 2. Institut de Física Corpuscular, Universitat de Valéncia-CSIC, E-46100, Burjassot, Valéncia, Spain 3. Departament de Física Teórica, Universitat de Valencia, Valencia 4. Departament de Física Atómica y Nuclear, Universitat de Valéncia, Valéncia |
| Abstract: | We analyze, within a non-relativistic quark model, the low energy part of the baryonic spectrum in the octet and decuplet flavour representations. The relevance of a strong Coulomb potential is emphasized in order to explain its general features. The addition of a three-body force allows to solve the  Roper puzzle , giving a consistent explanation to its relative position in the spectrum.This work has been supported by the grants CICYT: AEN-90-0040 and DGICYT: PB88-0064 and Acción Integrada HF-101. We are also grateful to V. Vento for illuminating discussions. |
| Keywords: | KeywordHeading" >PACS 14.20.Gk 14.20.Jn |
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