Transverse structure of the pion beyond leading twist with basis light-front quantization

Abstract

We investigate the twist-$3$ transverse-momentum-dependent parton distribution functions (TMDs) of the pion with basis light-front quantization. The twist-3 TMDs are not independent and can be decomposed into twist-$2$ and genuine twist-$3$ terms from the equations of motion (EOM). We compute the TMDs from the resulting light-front wave functions obtained by diagonalizing the light-front QCD Hamiltonian, determined for pion's constituent quark-antiquark and quark-antiquark-gluon Fock sectors, with three-dimensional confinement. We also obtain the twist-3 parton distribution functions (PDFs) and show that they preserve the sum rule, which affirms the robustness of our approach. This is the first time that theoretical predictions are made for subleading twist structures of the pion containing interference terms between two light-front Fock sectors.

12 pages, 7 figures

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• Efficient Quantum Simulation of QCD Jets on the Light Front
• Transverse structure of the proton beyond leading twist: A light-front Hamiltonian approach
• Gravitational form factor $D$ of charmonium from shear stress
• Transverse and spatial structure of light to heavy pseudoscalar mesons in light-cone quark model
• Stress out of charmonia
• Double parton distributions of the proton from basis light-front quantization
• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects
• Anisotropic flow and the valence quark skeleton of hadrons
• Tomography of Pions and Kaons in the QCD Vacuum: Transverse Momentum Dependent Parton Distribution Functions