Chiral extrapolations for nucleon magnetic moments
arXiv:1201.6114 · doi:10.1103/PhysRevD.85.094502
Abstract
Lattice QCD simulations have made significant progress in the calculation of nucleon electromagnetic form factors in the chiral regime in recent years. With simulation results achieving pion masses of order ~180 MeV, there is an apparent challenge as to how the physical regime is approached. By using contemporary methods in chiral effective field theory, both the quark-mass and finite-volume dependence of the isovector nucleon magnetic moment are carefully examined. The extrapolation to the physical point yields a result that is compatible with experiment, albeit with a combined statistical and systematic uncertainty of 10%. The extrapolation shows a strong finite-volume dependence; lattice sizes of L > 5 fm must be used to simulate results within 2% of the infinite-volume result for the magnetic moment at the physical pion mass.
7 pages, 12 figures, 1 table
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Cited by in corpus (23)
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- Sigma terms from an SU(3) chiral extrapolation
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- Octet baryon electromagnetic form factors in nuclear medium
- Electric form factors of the octet baryons from lattice QCD and chiral extrapolation
- Magnetic properties of the nucleon in a uniform background field
- Electromagnetic form factors of the nucleon in effective field theory
- Electric polarizability of neutral hadrons from dynamical lattice QCD ensembles
- Finite-volume and partial quenching effects in the magnetic polarizability of the neutron
- Chiral extrapolations for nucleon electric charge radii
- Nucleon resonance structure in the finite volume of lattice QCD
- The magnetic moments and electromagnetic form factors of the decuplet baryons in chiral perturbation theory
- Regularisation in Nonperturbative Extensions of Effective Field Theory
- Chiral extrapolation of nucleon magnetic moments at next-to-leading-order
- Excited states in nucleon structure calculations
- SU(3) breaking in hyperon transition vector form factors
- Opposite-Parity Contaminations in Lattice Nucleon Form Factors
- Charge symmetry breaking from a chiral extrapolation of moments of quark distribution functions
- Chiral Effective Theory Methods and their Application to the Structure of Hadrons from Lattice QCD
- Finite-volume corrections to charge radii
- Pure sea-quark contributions to the magnetic form factors of baryons
- Chiral Analysis of the Nucleon Mass and Sigma Commutator
- Magnetic Polarisability of Octet Baryons via Lattice QCD