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| Content Provider | Springer Nature Link |
|---|---|
| Author | Giannini, M.M. Santopinto, E. Vassallo, A. |
| Copyright Year | 2001 |
| Abstract | The constituent quark model based on a hypercentral approach takes into account three-body force effects and standard two-body potential contributions. The quark potential contains a hypercentral interaction, to which a hyperfine term is added. While the hypercentral potential supplies good values for the centroid energies of the resonance multiplets and a realistic set of quark wave functions, the hyperfine splittings are sometimes not sufficient to account for the observed masses. In this work we have introduced an improved form of the hyperfine interaction and an isospin-dependent quark potential. The resulting description of the baryon spectrum is very good, also for the Roper resonance, specially thanks to the flavour-dependent interaction. |
| Starting Page | 447 |
| Ending Page | 452 |
| Page Count | 6 |
| File Format | |
| ISSN | 14346001 |
| Journal | The European Physical Journal A - Hadrons and Nuclei |
| Volume Number | 12 |
| Issue Number | 4 |
| e-ISSN | 1434601X |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2001-12-01 |
| Publisher Place | Berlin Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics |
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