Charmonium states in a coupled-channel model
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866913468318220288 |
|---|---|
| author | Man, Zi-Long Shu, Cheng-Rui Liu, Yan-Rui Chen, Hong |
| author_facet | Man, Zi-Long Shu, Cheng-Rui Liu, Yan-Rui Chen, Hong |
| contents | We systematically investigate the mass spectrum and two-body open-charm strong decays of charmonium states in a coupled-channel model where the $^3P_0$ quark-antiquark pair creation mechanism is employed. The results of masses, mass shifts, proportions of the $c\bar{c}$ component, and open-charm decay widths are provided. The $S$-$D$ wave mixing angles and di-electric decay widths for vector mesons are also presented. Based on our results, we find that the $ψ(3770)$, $ψ(4040)$, $ψ(4160)$, $ψ(4360)$, and $ψ(4415)$ can be assigned as the $1^3D_1$-, $3^3S_1$-, $2^3D_1$-, $4^3S_1$-, and $3^3D_1$-dominated charmonium states, respectively. The $ψ_3(3842)$ is a good candidate of the $ψ_3(1D)$ charmonium state. The calculated mass and strong decay width of $χ_{c1}(2P)$ with significant continuum contribution ($\sim$57\%) favor the charmonium interpretation for the mysterious $χ_{c1}(3872)$. When considering the large uncertainty in the observed decay width, the possibility to assign the $χ_{c0}(3860)$ as the $χ_{c0}(2P)$ charmonium state cannot be ruled out. One may describe well the properties of $χ_{c2}(3930)$ with the $χ_{c2}(2P)$ charmonium. The predictions on properties of other $c\bar{c}$ states can be tested by future experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_02765 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Charmonium states in a coupled-channel model Man, Zi-Long Shu, Cheng-Rui Liu, Yan-Rui Chen, Hong High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Theory We systematically investigate the mass spectrum and two-body open-charm strong decays of charmonium states in a coupled-channel model where the $^3P_0$ quark-antiquark pair creation mechanism is employed. The results of masses, mass shifts, proportions of the $c\bar{c}$ component, and open-charm decay widths are provided. The $S$-$D$ wave mixing angles and di-electric decay widths for vector mesons are also presented. Based on our results, we find that the $ψ(3770)$, $ψ(4040)$, $ψ(4160)$, $ψ(4360)$, and $ψ(4415)$ can be assigned as the $1^3D_1$-, $3^3S_1$-, $2^3D_1$-, $4^3S_1$-, and $3^3D_1$-dominated charmonium states, respectively. The $ψ_3(3842)$ is a good candidate of the $ψ_3(1D)$ charmonium state. The calculated mass and strong decay width of $χ_{c1}(2P)$ with significant continuum contribution ($\sim$57\%) favor the charmonium interpretation for the mysterious $χ_{c1}(3872)$. When considering the large uncertainty in the observed decay width, the possibility to assign the $χ_{c0}(3860)$ as the $χ_{c0}(2P)$ charmonium state cannot be ruled out. One may describe well the properties of $χ_{c2}(3930)$ with the $χ_{c2}(2P)$ charmonium. The predictions on properties of other $c\bar{c}$ states can be tested by future experiments. |
| title | Charmonium states in a coupled-channel model |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Theory |
| url | https://arxiv.org/abs/2402.02765 |