Photoproduction of $η_{c}γ$ pairs in CGC framework
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916660108066816 |
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| author | Siddikov, M. Zemlyakov, I. Roa, M. Valdebenito, S. |
| author_facet | Siddikov, M. Zemlyakov, I. Roa, M. Valdebenito, S. |
| contents | In this paper we analyzed the exclusive photoproduction of $η_{c}γ$ pairs in the Color Glass Condensate framework. We found that the cross-section of this process is sensitive only to the forward dipole scattering amplitude, and thus could be used as a new tool for analysis of this fundamental nonperturbative object. Using the phenomenological parametrizations of this object, we estimated numerically the production cross-section and counting rates in the kinematics of the ongoing and forthcoming experiments at LHC and future Electron Ion Collider. We found that the cross-section is sufficiently large for dedicated experimental study. We also estimated the role of this process as a potential background to $η_{c}$ photoproduction, which is conventionally considered as a gateway for studies of odderons. We found that the contribution of $η_{c}γ$ (with undetected photon) is on par with expected contributions of odderons in the kinematics of small momentum transfer $|t|\lesssim1$ GeV$^{2}$, though decreases rapidly at larger $|t|$. Finally, we also calculated the feed-down contribution (from radiative decays of other charmonia) and found that a sizable correction comes from $J/ψ\toη_{c}γ$ decays. This contribution remains pronounced even at relatively large $|t|$ and potentially can impose constraint on detectability of odderons via $η_{c}$ photoproduction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_05545 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Photoproduction of $η_{c}γ$ pairs in CGC framework Siddikov, M. Zemlyakov, I. Roa, M. Valdebenito, S. High Energy Physics - Phenomenology In this paper we analyzed the exclusive photoproduction of $η_{c}γ$ pairs in the Color Glass Condensate framework. We found that the cross-section of this process is sensitive only to the forward dipole scattering amplitude, and thus could be used as a new tool for analysis of this fundamental nonperturbative object. Using the phenomenological parametrizations of this object, we estimated numerically the production cross-section and counting rates in the kinematics of the ongoing and forthcoming experiments at LHC and future Electron Ion Collider. We found that the cross-section is sufficiently large for dedicated experimental study. We also estimated the role of this process as a potential background to $η_{c}$ photoproduction, which is conventionally considered as a gateway for studies of odderons. We found that the contribution of $η_{c}γ$ (with undetected photon) is on par with expected contributions of odderons in the kinematics of small momentum transfer $|t|\lesssim1$ GeV$^{2}$, though decreases rapidly at larger $|t|$. Finally, we also calculated the feed-down contribution (from radiative decays of other charmonia) and found that a sizable correction comes from $J/ψ\toη_{c}γ$ decays. This contribution remains pronounced even at relatively large $|t|$ and potentially can impose constraint on detectability of odderons via $η_{c}$ photoproduction. |
| title | Photoproduction of $η_{c}γ$ pairs in CGC framework |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.05545 |