Leading Quenching Effects in the Proton Magnetic Moment

Abstract

We present the first investigation of the extrapolation of quenched nucleon magnetic moments in quenched chiral effective field theory. We utilize established techniques in finite-range regularisation and compare with standard dimensional regularisation methods. Finite-volume corrections to the relevant loop integrals are also addressed. Finally, the contributions of dynamical sea quarks to the proton moment are estimated using a recently discovered phenomenological link between quenched and physical QCD.

9 pages, 11 figs; v2: revised finite volume discussion

References in corpus (3)

• Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments
• Nucleon Masses and Magnetic Moments in a Finite Volume
• The strangeness magnetic moment of the nucleon from FLIC fermions

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