Bulava, John and Cid-Mora, Barbara and Hanlon, Andrew D. and Horz, Ben (2024) Low-lying baryon resonances from lattice QCD. Il nuovo cimento C, 47 (4). pp. 1-5. ISSN 1826-9885
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Abstract
Recent results studying the masses and widths of low-lying baryon resonances in lattice QCD are presented. The S-wave Nπ scattering lengths for both total isospins I = 1/2 and I = 3/2 are inferred from the finite-volume spectrum below the inelastic threshold together with the I = 3/2 P-wave containing the Δ(1232) resonance. A lattice QCD computation employing a combined basis of three-quark and meson-baryon interpolating operators with definite momentum to determine the coupled channel Σπ-NK scattering amplitude in the Λ(1405) region is also presented. Our results support the picture of a two-pole structure suggested by theoretical approaches based on SU(3) chiral symmetry and unitarity.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Sep 2024 15:24 |
| Last Modified: | 11 Sep 2024 15:24 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23118 |
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