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arXiv · 2502.13741

$Ω_c$ baryon spectrum and strong decays in a constituent quark model

Hui-Hua Zhong·Ming-Sheng Liu·Li-Ye Xiao·Kai-Lei Wang·Qi-Li·Xian-Hui Zhong
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Abstract

In this work, we study the $Ω_c$ baryon spectrum up to the $2P$ excitations within a semi-relativistic 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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Hui-Hua Zhong, Ming-Sheng Liu, Li-Ye Xiao, Kai-Lei Wang, Qi-Li, Xian-Hui Zhong. 2026-08-16. $Ω_c$ baryon spectrum and strong decays in a constituent quark model. https://arxiv.org/abs/2502.13741

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