Probing gluonic saturation in deeply virtual meson production beyond leading power
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929616425320448 |
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| author | Boussarie, Renaud Fucilla, Michael Szymanowski, Lech Wallon, Samuel |
| author_facet | Boussarie, Renaud Fucilla, Michael Szymanowski, Lech Wallon, Samuel |
| contents | Exclusive diffractive meson production represents a golden channel for investigating gluonic saturation inside nucleons and nuclei. In this letter, we settle a systematic framework to deal with beyond leading power corrections at small-$x$, including the saturation regime, and obtain the $γ^{*} \rightarrow M (ρ, ϕ, ω)$ impact factor with both incoming photon and outgoing meson carrying arbitrary polarizations. This is of particular interest since the saturation scale at modern colliders, although entering a perturbative regime, is not large enough to prevents higher-twist effects to be sizable. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_18203 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing gluonic saturation in deeply virtual meson production beyond leading power Boussarie, Renaud Fucilla, Michael Szymanowski, Lech Wallon, Samuel High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory Exclusive diffractive meson production represents a golden channel for investigating gluonic saturation inside nucleons and nuclei. In this letter, we settle a systematic framework to deal with beyond leading power corrections at small-$x$, including the saturation regime, and obtain the $γ^{*} \rightarrow M (ρ, ϕ, ω)$ impact factor with both incoming photon and outgoing meson carrying arbitrary polarizations. This is of particular interest since the saturation scale at modern colliders, although entering a perturbative regime, is not large enough to prevents higher-twist effects to be sizable. |
| title | Probing gluonic saturation in deeply virtual meson production beyond leading power |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory |
| url | https://arxiv.org/abs/2407.18203 |