STI Publications - View Publication Form #21504
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Publication Information
| Title | Nonlocal chiral contributions to generalized parton distributions of the proton at nonzero skewness | ||||
| Abstract | We compute the one-loop contributions to spin-averaged generalized parton distributions (GPDs) in the proton from pseudoscalar mesons with intermediate octet and decuplet baryon states at nonzero skewness. Our framework is based on nonlocal covariant chiral effective theory, with ultraviolet divergences regularized by introducing a relativistic regulator derived consistently from the nonlocal Lagrangian. Using the splitting functions calculated from the nonlocal Lagrangian, we find the nonzero skewness GPDs from meson loops by convoluting with the phenomenological pion GPD and the generalized distribution amplitude, and verify that these satisfy the correct polynomiality properties. We also compute the lowest two moments of GPDs to quantify the meson loop effects on the Dirac, Pauli and gravitational form factors of the proton. | ||||
| Author(s) | Zhengyang Gao, Chueng-Ryong Ji, W. Melnitchouk, Y. Salamu, Ping Wang | ||||
| Publication Date | September 2024 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 110 |
| Issue | |
| Page(s) | 054049 |
Attachments/Datasets/DOI Link
| Document(s) |
skewed_GPD.pdf
(STI Document)
PhysRevD.110.054049.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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