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

doi:10.1103/PhysRevD.110.114025

Title: Nucleon tomography and total angular momentum of valence quarks from synergy between lattice QCD and elastic scattering data

Journal Article · 15 December 2024 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.110.114025 · OSTI ID:2481377

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Adam Mickiewicz University, Poznan (Poland)
Temple University, Philadelphia, PA (United States)
National Centre for Nuclear Research, Warsaw (Poland)

We present an exploratory work on integrating lattice-QCD results with experimental data for elastic scattering. Within the framework of generalized parton distributions, 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.

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Research Organization:: Temple University-Of The CommonWealth System Of Higher Education, Philadelphia, PA (United States)

Sponsoring Organization:: National Energy Research Scientific Computing Center (NERSC); National Science Centre (Poland); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-05CH11231; SC0023646; SC0025218

OSTI ID:: 2481377

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 110; ISSN 2470-0010; ISSN 2470-0029

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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