Exploring twist-3 chiral even generalized parton distributions of light sea quarks in the proton using the light front model
Year: 2026
Type: article
Abstract: In this paper, we develop an effective light-front model of the proton to investigate the twist-3 chiral-even generalized parton distributions (GPDs) of light sea quarks. In this framework, sea quarks are treated as spin-[Formula: see text] active partons, while the remaining proton constituents are modeled as spin-1 spectators. The light-front momentum wave function, derived from the soft-wall AdS/QCD approach, is fitted to unpolarized parton distribution functions (PDFs) from the CTEQ global analysis to constrain the model parameters. To further validate the model, we analyze the sea quark flavor asymmetry through the difference [Formula: see text] and the ratio [Formula: see text], achieving good agreement with known phenomenological trends. Using this fitted distribution, we compute the twist-3 chiral-even GPDs and examine their dependence on the transverse momentum transfer [Formula: see text] and the longitudinal momentum fraction x. In addition, we evaluate the twist-3 chiral-even PDF [Formula: see text] within this framework. The contribution of sea quarks to the proton’s orbital angular momentum (OAM) is also investigated and compared with existing results in the literature.
Institutions: Tezpur University, Nagaon University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4404350784