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Type: Journal article
Title: Chiral extrapolation of nucleon magnetic moments at next-to-leading-order
Author: Wang, P.
Leinweber, D.
Thomas, A.
Young, R.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2012; 86(9):1-9
Publisher: American Physical Soc
Issue Date: 2012
ISSN: 1550-7998
Organisation: Special Research Centre for the Subatomic Structure of Matter
Statement of
P. Wang, D. B. Leinweber, A.W. Thomas, and R. D. Young
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 regularized chiral effective field theory. By defining meson-cloud and core contributions through the careful selection of a regularization 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 loop contributions. We discuss the subtleties associated with working at next-to-leading order and illustrate the role of higher-order corrections.
Rights: © 2012 American Physical Society
RMID: 0020123377
DOI: 10.1103/PhysRevD.86.094038
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Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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