Photoproduction of the $X(3872)$ beyond vector meson dominance: the open-charm coupled-channel mechanism
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913499007942656 |
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| author | Cao, Xiong-Hui Du, Meng-Lin Guo, Feng-Kun |
| author_facet | Cao, Xiong-Hui Du, Meng-Lin Guo, Feng-Kun |
| contents | Hidden-charm exotic hadrons will be searched for and investigated at future electron-ion colliders. For instance, the $X(3872)$ can be produced through the exclusive process $γp\to X(3872)p$. The vector meson dominance model has been commonly employed in estimating the cross sections of such processes. However, the coupled-channel production mechanism through open-charm meson-baryon intermediate states may play a crucial role. To assess the significance of such contributions, we estimate the cross section of the $γp\to X(3872)p$ reaction assuming the coupled-channel mechanism. For energies near the threshold, the total cross section is predicted to be of tens of nanobarns for $γp\to X(3872)p$, which can be measured at future experimental facilities. Furthermore, the open-charm coupled-channel mechanism leads to a distinct line shape of the total cross section that can be utilized to reveal the production dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_16112 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photoproduction of the $X(3872)$ beyond vector meson dominance: the open-charm coupled-channel mechanism Cao, Xiong-Hui Du, Meng-Lin Guo, Feng-Kun High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory Hidden-charm exotic hadrons will be searched for and investigated at future electron-ion colliders. For instance, the $X(3872)$ can be produced through the exclusive process $γp\to X(3872)p$. The vector meson dominance model has been commonly employed in estimating the cross sections of such processes. However, the coupled-channel production mechanism through open-charm meson-baryon intermediate states may play a crucial role. To assess the significance of such contributions, we estimate the cross section of the $γp\to X(3872)p$ reaction assuming the coupled-channel mechanism. For energies near the threshold, the total cross section is predicted to be of tens of nanobarns for $γp\to X(3872)p$, which can be measured at future experimental facilities. Furthermore, the open-charm coupled-channel mechanism leads to a distinct line shape of the total cross section that can be utilized to reveal the production dynamics. |
| title | Photoproduction of the $X(3872)$ beyond vector meson dominance: the open-charm coupled-channel mechanism |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2401.16112 |