Nucleon tomography and total angular momentum of valence quarks from synergy between lattice QCD and elastic scattering data
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917787590459392 |
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| author | Cichy, Krzysztof Constantinou, Martha Sznajder, Paweł Wagner, Jakub |
| author_facet | Cichy, Krzysztof Constantinou, Martha Sznajder, Paweł Wagner, Jakub |
| contents | We present an exploratory work on integrating lattice-QCD results with experimental data for elastic scattering. Within the framework of generalized parton distributions (GPDs), this approach allows for the extraction of detailed information about nucleon tomography and the total angular momentum carried by valence quarks. To accomplish this reliably, we introduce a new quantity, the "double ratio", which significantly reduces the systematic uncertainties inherent in lattice QCD computations. Moreover, we introduce a "shadow" term in the extraction procedure, which is sensitive only to lattice-QCD results. This term allows us to investigate the model dependence of the extraction, providing a more flexible description of the nucleon that goes beyond the previously considered bell-shaped distribution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17955 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nucleon tomography and total angular momentum of valence quarks from synergy between lattice QCD and elastic scattering data Cichy, Krzysztof Constantinou, Martha Sznajder, Paweł Wagner, Jakub High Energy Physics - Phenomenology High Energy Physics - Lattice We present an exploratory work on integrating lattice-QCD results with experimental data for elastic scattering. Within the framework of generalized parton distributions (GPDs), this approach allows for the extraction of detailed information about nucleon tomography and the total angular momentum carried by valence quarks. To accomplish this reliably, we introduce a new quantity, the "double ratio", which significantly reduces the systematic uncertainties inherent in lattice QCD computations. Moreover, we introduce a "shadow" term in the extraction procedure, which is sensitive only to lattice-QCD results. This term allows us to investigate the model dependence of the extraction, providing a more flexible description of the nucleon that goes beyond the previously considered bell-shaped distribution. |
| title | Nucleon tomography and total angular momentum of valence quarks from synergy between lattice QCD and elastic scattering data |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2409.17955 |