First moments of nucleon generalized parton distributions

2010/03/31 by P. Wang, A. W. Thomas · 20 citations
Mathematics · Physics and Astronomy · #Chiral perturbation theory #Extrapolation #High-Energy Particle Collisions Research #Lattice QCD #Lattice field theory #Mathematical analysis #Mathematical physics #Mathematics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Regularization (linguistics) #hep-ph

paper · pdf · doi:10.1103/physrevd.81.114015

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 81(11) (American Physical Society) · 14 pages, 9 figures

arxiv created 2010/05/27 · openalex publication_date 2010/06/09 · arxiv updated 2014/11/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We extrapolate the first moments of the generalized parton distributions using heavy baryon chiral perturbation theory. The calculation is based on the one loop level with the finite range regularization. The description of the lattice data is satisfactory, and the extrapolated moments at physical pion mass are consistent with the results obtained with dimensional regularization, although the extrapolation in the momentum transfer to t=0 does show sensitivity to form factor effects, which lie outside the realm of chiral perturbation theory. We discuss the significance of the results in the light of modern experiments as well as QCD inspired models.

Citations

• Leading quenching effects in the proton magnetic moment
• Nucleon magnetic moments beyond the perturbative chiral regime
• Physical Nucleon Properties from Lattice QCD
• Extrapolation of lattice QCD results beyond the power-counting regime
• Chiral extrapolation of hadronic observables
• Chiral and continuum extrapolation of partially-quenched lattice results
• Convergence of chiral effective field theory
• Strange magnetic form factor of the proton atQ2=0.23 GeV2
• Unified chiral analysis of the vector meson spectrum from lattice QCD
• Generalized parton distributions for the nucleon in chiral perturbation theory
• Chiral extrapolation of octet-baryon charge radii
• Strange Electric Form Factor of the Proton

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• Strange form factors of the nucleon with a nonlocal chiral effective Lagrangian