Probe charmonium-nucleon interactions in high energy proton-proton collisions
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
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| _version_ | 1866915897308872704 |
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| author | Zhao, Jiaxing Song, Taesoo Aichelin, Joerg Bratkovskaya, Elena Gossiaux, Pol Bernard Werner, Klaus |
| author_facet | Zhao, Jiaxing Song, Taesoo Aichelin, Joerg Bratkovskaya, Elena Gossiaux, Pol Bernard Werner, Klaus |
| contents | We investigate charmonium production and the charmonium-nucleon correlation function in pp collisions using the EPOS4+CATS framework. For the first time, the emission source of charmonium-proton pairs is dynamically generated and found to be non-Gaussian. This enables a femtoscopic extraction of the charmonium-proton interaction directly from experimental correlation functions. Both ground and excited charmonium states are included. We found that the excited states induce sizable uncertainties even negative in the observed prompt $J/ψ$-proton correlation through feed-down effects, reflecting their stronger interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_27391 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Probe charmonium-nucleon interactions in high energy proton-proton collisions Zhao, Jiaxing Song, Taesoo Aichelin, Joerg Bratkovskaya, Elena Gossiaux, Pol Bernard Werner, Klaus High Energy Physics - Phenomenology Nuclear Theory We investigate charmonium production and the charmonium-nucleon correlation function in pp collisions using the EPOS4+CATS framework. For the first time, the emission source of charmonium-proton pairs is dynamically generated and found to be non-Gaussian. This enables a femtoscopic extraction of the charmonium-proton interaction directly from experimental correlation functions. Both ground and excited charmonium states are included. We found that the excited states induce sizable uncertainties even negative in the observed prompt $J/ψ$-proton correlation through feed-down effects, reflecting their stronger interactions. |
| title | Probe charmonium-nucleon interactions in high energy proton-proton collisions |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2603.27391 |