Extraction of the Parton Momentum-Fraction Dependence of Generalized Parton Distributions from Exclusive Photoproduction
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866910369652408320 |
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| author | Qiu, Jian-Wei Yu, Zhite |
| author_facet | Qiu, Jian-Wei Yu, Zhite |
| contents | The $x$ dependence of hadrons' generalized parton distributions (GPDs) $\mathcal{F}(x,ξ,t)$ is the most difficult to extract from the existing known processes, while the $ξ$ and $t$ dependence are uniquely determined by the kinematics of the scattered hadron. We study the single diffractive hard exclusive processes for extracting GPDs in the photoproduction. We demonstrate quantitatively the enhanced sensitivity on extracting the $x$ dependence of various GPDs from the photoproduction cross sections, as well as the asymmetries constructed from photon polarization and hadron spin that could be measured at JLab Hall D by GlueX Collaboration and future facilities. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2305_15397 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Extraction of the Parton Momentum-Fraction Dependence of Generalized Parton Distributions from Exclusive Photoproduction Qiu, Jian-Wei Yu, Zhite High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory The $x$ dependence of hadrons' generalized parton distributions (GPDs) $\mathcal{F}(x,ξ,t)$ is the most difficult to extract from the existing known processes, while the $ξ$ and $t$ dependence are uniquely determined by the kinematics of the scattered hadron. We study the single diffractive hard exclusive processes for extracting GPDs in the photoproduction. We demonstrate quantitatively the enhanced sensitivity on extracting the $x$ dependence of various GPDs from the photoproduction cross sections, as well as the asymmetries constructed from photon polarization and hadron spin that could be measured at JLab Hall D by GlueX Collaboration and future facilities. |
| title | Extraction of the Parton Momentum-Fraction Dependence of Generalized Parton Distributions from Exclusive Photoproduction |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2305.15397 |