Extraction of the Parton Momentum-Fraction Dependence of Generalized Parton Distributions from Exclusive Photoproduction

Qiu, Jian-Wei; Yu, Zhite

doi:10.1103/physrevlett.131.161902

Title: Extraction of the Parton Momentum-Fraction Dependence of Generalized Parton Distributions from Exclusive Photoproduction

Journal Article · 17 October 2023 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.131.161902 · OSTI ID:2202720

^[1];

^[2]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); College of William and Mary, Williamsburg, VA (United States)
Michigan State Univ., East Lansing, MI (United States)

The x dependence of hadrons' generalized parton distributions (GPDs) 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.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 2202720

Alternate ID(s):: OSTI ID: 2202965

Report Number(s):: JLAB-THY-23-3828; arXiv:2305.15397; DOE/OR/23177-6230; TRN: US2406523

Journal Information:: Physical Review Letters, Vol. 131, Issue 16; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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