Suenaga, D. (2024) Mass spectrum of three-quark and five-quark singly heavy baryons from a chiral model. Il nuovo cimento C, 47 (4). pp. 1-5. ISSN 1826-9885
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Abstract
We construct a chiral effective model for three-quark and five-quark singly heavy baryons (SHBs) which is heavy-quark spin singlet, focusing on the U(1)A axial anomaly effects. Based on the model, we find that the anomaly effects induce the inverse mass hierarchy of negative-parity three-quark SHBs, where Λc becomes heavier than Ξc. On the contrary, the anomaly effect is found to provide no effects for the mass spectrum of five-quark SHBs. We also present a predicted mass spectrum of the SHBs in the presence of the mixing between three-quark and five-quark states. The predicted five-quark dominant Λc(−), whose mass is approximately 2700 MeV, is expected to be a useful evidence to check our description.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Sep 2024 15:28 |
| Last Modified: | 11 Sep 2024 15:28 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23129 |
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