Chiral extrapolation of nucleon magnetic moments at next-to-leading-order

Abstract

Nucleon magnetic moments display a rich nonanalytic dependence on the quark mass in both quenched and full QCD. They provide a forum for a detailed examination of the connection between quenched and full QCD made possible through the formalism of finite-range regularised chiral effective field theory. By defining meson-cloud and core contributions through the careful selection of a regularisation scale, one can correct the meson cloud of quenched QCD to make full QCD predictions. Whereas past success is based on unquenching the leading-order loop contributions, here we extend and test the formalism including next to leading-order (NLO) loop contributions. We discuss the subtleties associated with working at NLO and illustrate the role of higher-order corrections.

11 pages, 5 figures

References in corpus (7)

• Chiral Perturbation Theory and Baryon Properties
• The nucleon axial charge from lattice QCD with controlled errors
• The nucleon electromagnetic form factors from Lattice QCD
• Chiral extrapolation of nucleon magnetic form factors
• The pion mass dependence of the nucleon form-factors of the energy momentum tensor in the chiral quark-soliton model
• Chiral extrapolation of octet-baryon charge radii
• Nucleon form factors from quenched lattice QCD with domain wall fermions

Cited by in corpus (14)

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• Nucleon electromagnetic form factors with non-local chiral effective Lagrangian
• 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
• Generalized parton distributions of sea quarks in the proton from nonlocal chiral effective theory
• Chiral extrapolation and finite-volume dependence of the hyperon vector couplings
• Pure sea-quark contributions to the magnetic form factors of $\Sigma$ baryons
• Chiral extrapolation of nucleon axial charge $g_A$ in effective field theory
• Nucleon magnetic form factors with non-local chiral effective Lagrangian
• 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