Understanding the low-lying $Ω_c$ structures from a coupled-channel perspective
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908478362091520 |
|---|---|
| author | Zhang, Ying Song, Qing-Fu Lü, Qi-Fang Nagahiro, Hideko Hosaka, Atsushi |
| author_facet | Zhang, Ying Song, Qing-Fu Lü, Qi-Fang Nagahiro, Hideko Hosaka, Atsushi |
| contents | We perform a systematic analysis of the low-lying $Ω_c$ structures in a coupled-channel approach. The couplings between meson-baryon channels, $Ξ_c \bar K$, $Ξ_c^{\prime} \bar K$, $Ξ_c^{*} \bar K$, $Ω_cη$ and $Ω_c^{*}η$, and three-quark bare states $Ω_c(1P_λ)$ are considered. We predict a bound state $Ω_c(2954)$ below the $Ξ_c \bar K$ threshold with $(J^P,j)=(1/2^-,0)$, which can be studied in the final states of $Ω_c^{(*)} π$ and $Ω_c^{(*)} γ$. Also, the resonances $Ω_c(3000)$ and $Ω_c(3050)$ can be classified as the lower $(J^P,j)=(1/2^-,1)$ and $(J^P,j)=(3/2^-,1)$ states, respectively. Our present assignments based on this coupled-channel perspective are significantly different from those of traditional three-quark picture and of molecular scenario. The future BelleII and LHCb experiments can search for the bound state $Ω_c(2954)$ and measure the spin-parities of particles $Ω_c(3000)$ and $Ω_c(3050)$ to test our predictions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_06611 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Understanding the low-lying $Ω_c$ structures from a coupled-channel perspective Zhang, Ying Song, Qing-Fu Lü, Qi-Fang Nagahiro, Hideko Hosaka, Atsushi High Energy Physics - Phenomenology High Energy Physics - Experiment We perform a systematic analysis of the low-lying $Ω_c$ structures in a coupled-channel approach. The couplings between meson-baryon channels, $Ξ_c \bar K$, $Ξ_c^{\prime} \bar K$, $Ξ_c^{*} \bar K$, $Ω_cη$ and $Ω_c^{*}η$, and three-quark bare states $Ω_c(1P_λ)$ are considered. We predict a bound state $Ω_c(2954)$ below the $Ξ_c \bar K$ threshold with $(J^P,j)=(1/2^-,0)$, which can be studied in the final states of $Ω_c^{(*)} π$ and $Ω_c^{(*)} γ$. Also, the resonances $Ω_c(3000)$ and $Ω_c(3050)$ can be classified as the lower $(J^P,j)=(1/2^-,1)$ and $(J^P,j)=(3/2^-,1)$ states, respectively. Our present assignments based on this coupled-channel perspective are significantly different from those of traditional three-quark picture and of molecular scenario. The future BelleII and LHCb experiments can search for the bound state $Ω_c(2954)$ and measure the spin-parities of particles $Ω_c(3000)$ and $Ω_c(3050)$ to test our predictions. |
| title | Understanding the low-lying $Ω_c$ structures from a coupled-channel perspective |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.06611 |