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| Autors principals: | , , , , |
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| Format: | Preprint |
| Publicat: |
2024
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| Matèries: | |
| Accés en línia: | https://arxiv.org/abs/2410.19526 |
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| _version_ | 1866909955416653824 |
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| author | Wu, Bing Dong, Xiang-Kun Du, Meng-Lin Guo, Feng-Kun Zou, Bing-Song |
| author_facet | Wu, Bing Dong, Xiang-Kun Du, Meng-Lin Guo, Feng-Kun Zou, Bing-Song |
| contents | The low-energy $J/ψN$ scattering is important for various reasons: it is related to the hidden-charm $P_c$ pentaquark states, provides insights into the role of gluons in nucleon structures, and is relevant to the $J/ψ$ properties in nuclear medium. The scattering can happen through two distinct mechanisms: the coupled-channel mechanism via open-charm meson-baryon intermediate states, and the soft-gluon exchange mechanism. We investigate the $J/ψN$ $S$-wave scattering length through both mechanisms, and find that the soft-gluon exchange mechanism leads to a scattering length at least one order of magnitude larger than that from the coupled-channel mechanism and thus is the predominant one. The findings can be verified by lattice calculations and will enhance our understanding of the scattering processes breaking the Okubo-Zweig-Iizuka rule. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_19526 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Deciphering the mechanism of $J/ψ$-nucleon scattering Wu, Bing Dong, Xiang-Kun Du, Meng-Lin Guo, Feng-Kun Zou, Bing-Song High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory The low-energy $J/ψN$ scattering is important for various reasons: it is related to the hidden-charm $P_c$ pentaquark states, provides insights into the role of gluons in nucleon structures, and is relevant to the $J/ψ$ properties in nuclear medium. The scattering can happen through two distinct mechanisms: the coupled-channel mechanism via open-charm meson-baryon intermediate states, and the soft-gluon exchange mechanism. We investigate the $J/ψN$ $S$-wave scattering length through both mechanisms, and find that the soft-gluon exchange mechanism leads to a scattering length at least one order of magnitude larger than that from the coupled-channel mechanism and thus is the predominant one. The findings can be verified by lattice calculations and will enhance our understanding of the scattering processes breaking the Okubo-Zweig-Iizuka rule. |
| title | Deciphering the mechanism of $J/ψ$-nucleon scattering |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2410.19526 |