Nuclear suppression in diffractive vector meson production within the color glass condensate framework
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915470282588160 |
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| author | Mäntysaari, Heikki Roch, Hendrik Salazar, Farid Schenke, Björn Shen, Chun Zhao, Wenbin |
| author_facet | Mäntysaari, Heikki Roch, Hendrik Salazar, Farid Schenke, Björn Shen, Chun Zhao, Wenbin |
| contents | We perform a global Bayesian analysis of diffractive $\mathrm{J}/ψ$ production in $γ+p$ and $γ+\mathrm{Pb}$ collisions within a Color Glass Condensate based framework. Using data from HERA and the LHC, we find that a simultaneous description of $γ+p$ and $γ+\mathrm{Pb}$ observables is challenging. Introducing a global $K$-factor to account for theoretical uncertainties improves the agreement with data and enhances the framework's predictive power. We present predictions for integrated $\mathrm{J}/ψ$ cross sections at different photon-nucleus energies and study their $A$-dependence relative to a no-saturation baseline, quantifying nuclear suppression and providing insights into the onset of saturation effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_21562 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nuclear suppression in diffractive vector meson production within the color glass condensate framework Mäntysaari, Heikki Roch, Hendrik Salazar, Farid Schenke, Björn Shen, Chun Zhao, Wenbin High Energy Physics - Phenomenology Nuclear Theory We perform a global Bayesian analysis of diffractive $\mathrm{J}/ψ$ production in $γ+p$ and $γ+\mathrm{Pb}$ collisions within a Color Glass Condensate based framework. Using data from HERA and the LHC, we find that a simultaneous description of $γ+p$ and $γ+\mathrm{Pb}$ observables is challenging. Introducing a global $K$-factor to account for theoretical uncertainties improves the agreement with data and enhances the framework's predictive power. We present predictions for integrated $\mathrm{J}/ψ$ cross sections at different photon-nucleus energies and study their $A$-dependence relative to a no-saturation baseline, quantifying nuclear suppression and providing insights into the onset of saturation effects. |
| title | Nuclear suppression in diffractive vector meson production within the color glass condensate framework |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2508.21562 |