Leinweber, Derek B. and Abell, Curtis D. and Hockley, Liam C. and Kamleh, Waseem (2024) Understanding the nature of baryon resonances. Il nuovo cimento C, 47 (4). pp. 1-8. ISSN 1826-9885
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Abstract
This paper opens with a brief review of lattice QCD calculations showing the 2s radial excitation of the nucleon sits at approximately 2 GeV, well above the Roper resonance position. We then proceed to reconcile this observation with experimental scattering data. While the idea of dressing quark-model states in a coupled-channel analysis to describe scattering data has been around for decades, it is now possible to bring these descriptions to the finite volume of lattice QCD for confrontation with lattice-QCD calculations. This combination of lattice QCD and experiment demands that we reconsider our preconceived notions about the quark model and its excitation spectrum. We close with a discussion of an unanticipated resolution to the missing baryon resonances problem.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 29 Jul 2024 14:13 |
| Last Modified: | 29 Jul 2024 14:13 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23083 |
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