STI Publications - View Publication Form #20479
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Publication Information
| Title | Extracting Transition Generalized Parton Distributions From Hard Exclusive Pion-Nucleon Scattering | ||||
| Abstract | We study the extraction of transition generalized parton distributions (GPDs) from production of two back-to-back high transverse momentum photons ($\gamma\gamma$) and a massive pair of leptons ($\ell^+\ell^-$) in hard exclusive pion-nucleon scattering. We argue that the exclusive scattering amplitude of both processes could be perturbatively factorized into pion distribution amplitude and nonperturbative transition GPDs, convoluted with perturbatively calculable short-distance matching coefficients. We demonstrate that the exclusive diphoton production is not only complementary to the Drell-Yan type dilepton production for extracting the GPDs, but also providing enhanced sensitivities for extracting the parton momentum fraction $x$-dependence of GPDs. We show that both exclusive observables are physically measurable at the J-PARC and AMBER experiment energies. If the target nucleon can be polarized, corresponding spin-asymmetries can offer additional sensitivities for extracting t | ||||
| Author(s) | Zhite Yu, Jianwei Qiu | ||||
| Publication Date | April 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), US Department of Energy, U.S. National Science Foundation, Wu-Ki Tung endowed fund | ||||
| 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 | No |
| Volume | 109 |
| Issue | |
| Page(s) | 074023 |
Attachments/Datasets/DOI Link
| Document(s) |
main55.pdf
(STI Document)
PhysRevD.109.074023.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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