Twist-3 generalized parton distribution for the proton from basis light-front quantization
Z. Zhang, Zhi Hu, Siqi Xu, Chandan Mondal, Xingbo Zhao, James P. Vary
Abstract
We investigate the twist-3 generalized parton distributions (GPDs) for the valence quarks of the proton within the basis light-front quantization (BLFQ) framework. We first solve for the mass spectra and light-front waved functions (LFWFs) in the leading Fock sector using an effective Hamiltonian. Using the LFWFs we then calculate the twist-3 GPDs via the overlap representation. By taking the forward limit, we also get the twist-3 parton distribution functions (PDFs), and discuss their properties. Our prediction for the twist-3 scalar PDF agrees well with the CLAS experimental extractions. Published by the American Physical Society 2024
Topics & Concepts
PartonTwistParticle physicsPhysicsQuantization (signal processing)Distribution (mathematics)Basis (linear algebra)ProtonMathematicsQuarkNuclear physicsGeometryMathematical analysisStatisticsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research