Strange magnetic form factor of nucleon in heavy baryon chiral effective approach at next to leading order

Abstract

The strange magnetic form factor of the nucleon is studied in the heavy baryon chiral effective approach at next to leading order. The one loop contributions from kaon and intermediate octet and decuplet hyperons are included, using finite-range-regularization to deal with the ultra-violet divergences. Drawing on an established connection between quenched and full QCD, this model makes it possible to predict the strange magnetic form factor under the hypothesis that for a dipole regulator mass $\Lambda$ around 0.8 GeV, strangeness in the core is negligible. The strange magnetic form factor is found to be small and negative over a range of momentum transfer, while the strange magnetic moment is consistent with the best lattice QCD determinations.

13 pages, 3 figures

References in corpus (11)

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• Resolution of the Proton Spin Problem
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• Hyperviscosity and statistical equilibria of Euler turbulence on the torus and the sphere
• Nucleon electromagnetic form factors with non-local chiral effective Lagrangian
• Neutron magnetic polarisability with Landau mode operators
• Constraining nucleon strangeness
• Nucleon resonance structure in the finite volume of lattice QCD
• Electromagnetic form factors of octet baryons with the nonlocal chiral effective theory
• Strange form factors of nucleon with nonlocal chiral effective Lagrangian
• The spin of the proton in chiral effective field theory
• Pure sea-quark contributions to the magnetic form factors of $\Sigma$ baryons
• Charge Symmetry Violation in the Electromagnetic Form Factors of the Proton
• Chiral extrapolation of nucleon axial charge $g_A$ in effective field theory
• Nucleon magnetic form factors with non-local chiral effective Lagrangian
• Singlet baryons in the graded symmetry approach to partially quenched QCD
• 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
• Sea quark contributions to the electromagnetic form factors of $\Sigma$ hyperons