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

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arxiv 2301.12994 v2 pith:OEUQ35LX submitted 2023-01-30 hep-ph nucl-th

Zhimin Zhu , Zhi Hu , Jiangshan Lan , Chandan Mondal , Xingbo Zhao , James P. Vary , BLFQ Collaboration This is my paper · ORCID
classification hep-phnucl-th
keywords light-frontpionfunctionstmdstwist-basisdistributionfock
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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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Efficient Quantum Simulation of QCD Jets on the Light Front

    hep-ph 2024-11 conditional novelty 6.0 of 10

    A direct second-quantized qubit encoding of the light-front QCD Hamiltonian is used to classically emulate in-medium jet evolution with up to three-particle Fock states.

  2. Basis light-front quantization approach to deuteron

    hep-ph 2025-05 conditional novelty 5.0 of 10

    Using basis light-front quantization with a six-quark plus one-gluon Fock space, the authors report that hidden color states dominate the deuteron wave function at 55.5% probability.

  3. Strange mesons with one dynamical gluon: A light-front approach

    hep-ph 2025-01 conditional novelty 5.0 of 10

    A basis light-front QCD model with one dynamical gluon reproduces strange meson spectra and yields kaon form factors, PDFs, and Drell-Yan cross sections testable at COMPASS++/AMBER.

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