Strange form factors of nucleon with nonlocal chiral effective Lagrangian

Abstract

The strange form factors of 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 $-0.041_{-0.014}^{+0.012}$ with $\Lambda =0.9\pm 0.1$ determined from the nucleon electromagnetic form factors. Our results are comparable with the recent lattice simulation.

12 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:1711.05896

References in corpus (8)

• Electromagnetic excitation of the Delta(1232)-resonance
• Chiral extrapolation of nucleon magnetic form factors
• Chiral extrapolation of octet-baryon charge radii
• Electromagnetic form factors of the baryon octet in the perturbative chiral quark model
• Sea Quarks Contribution to the Nucleon Magnetic Moment and Charge Radius at the Physical Point
• Nucleon electromagnetic form factors with non-local chiral effective Lagrangian
• Extraction of the Neutron Electric Form Factor from Measurements of Inclusive Double Spin Asymmetries
• Chiral extrapolation of nucleon axial charge $g_A$ in effective field theory

Cited by in corpus (10)

• Parton distributions from nonlocal chiral SU(3) effective theory. I. Splitting functions
• Parton distributions from nonlocal chiral SU(3) effective theory: Flavor asymmetries
• Electromagnetic form factors of octet baryons with the nonlocal chiral effective theory
• Generalized parton distributions of sea quarks in the proton from nonlocal chiral effective theory
• Sivers distribution functions of sea quark in proton with chiral Lagrangian
• Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory
• Sea quark contributions to nucleon electromagnetic form factors with the nonlocal chiral effective Lagrangian
• Contributions to the nucleon form factors from bubble and tadpole diagrams
• Helicity-dependent distribution of strange quarks in the proton from nonlocal chiral effective theory
• Sea quark contributions to the electromagnetic form factors of $\Sigma$ hyperons