Higher-twist generalized parton distributions of the pion and kaon at zero skewness in the light-cone quark model

2024/06/27 by Xiaoyan Luan, Luan, Xiaoyan, Zhun Lü +1 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2406.19376

openalex publication_date 2024/06/27 · openalex created_date 2024/06/29 · openalex updated_date 2026/07/28

Abstract

We investigate the higher-twist generalized parton distributions (GPDs) of the pion and kaon at zero skewness by adopting the overlap representation within the light-cone formalism. Using the wave functions of pion and kaon deduced from a light-cone quark model (LCQM), we calculate the twist-3 and twist-4 GPDs E₂(x,0,t), G₂(x,0,t), F₃(x,0,t) and H₃(x,0,t) of valence quark inside the pion and kaon mesons. Numerical results for these higher-twist GPDs are presented. By taking the forward limit, we also present the numerical results for the corresponding twist-3 and twist-4 parton distribution functions (PDFs) e(x) and f₃(x) of pion and kaon. We further study the relations between e(x) or f₃(x) and the twist-2 unpolarized PDF f₁(x).

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• Kaon T-even transverse-momentum-dependent distributions and form factors in a self-consistent light-front quark model

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