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

2018/05/29 by Fangcheng He, P. Wang · 1 citation
Physics and Astronomy · #Baryon #Form factor (electronics) #Gauge symmetry #Gauge theory #Lagrangian #Lambda #Lattice (music) #Magnetic moment #Mathematical physics #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #hep-ph

paper · pdf · doi:10.1103/physrevd.98.036007

published as Phys. Rev. D 98, 036007 (2018) · 12 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1711.05896

arxiv created 2018/05/29 · openalex publication_date 2018/08/09 · arxiv updated 2018/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The strange form factors of the nucleon are studied with the nonlocal chiral effective Lagrangian. One loop contributions from both octet and decuplet intermediate states are included. The relativistic regulator is obtained by the nonlocal Lagrangian where the gauge link is introduced to guarantee the local gauge symmetry. With the kaon loop, the calculated charge form factor is positive, while the magnetic form factor is negative. The strange magnetic moment is \ensuremath-0.041_\ensuremath-0.014^+0.012 with \mathrm\ensuremathΛ=0.9\ifmmode±\else\textpm\fi0.1 determined from the nucleon electromagnetic form factors. Our results are comparable with the recent lattice simulation.

Citations

• Nucleon electromagnetic form factors with non-local chiral effective Lagrangian
• An analysis of the nucleon spectrum from lattice partially-quenched QCD
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• Chiral extrapolation of octet-baryon charge radii
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Cited by

• Sea quark contributions to nucleon electromagnetic form factors with the nonlocal chiral effective Lagrangian

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