Regular Article - Theoretical Physics
A mixing coupling scheme for spectra of singly heavy baryons with spin-1 diquarks in P-waves
Institute of Theoretical Physics, College of Physics and Electronic Engineering, Northwest Normal University, 730070, Lanzhou, China
2 College of Physics and Electronic Information Engineering, Qinghai Normal University, 810000, Xining, China
3 Joint Research Center for Physics, Lanzhou University and Qinghai Normal University, 810000, Xining, China
4 Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, China
Accepted: 2 May 2021
Published online: 20 May 2021
A new scheme of state classification is proposed and applied to analyze masses of the heavy baryons , and in P-waves. The results confirm all excited and baryons reported recently by LHCb to be bound states of a P-wave ss-diquark and a respective charm or bottom quark, and thereby predict Regge trajectories for more excited and baryons. We suggest one excited state to be unseen by LHCb around 6352 MeV, and predict P-wave masses of all spin-partners of the odd-parity baryons and /. A computation is further given in a relativized potential quark models to explain matched values of spin couplings of all considered baryons, by which a scaling law for these spin couplings is discussed.
© The Author(s) 2021
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3