Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/44646
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Type: Journal article
Title: Chiral extrapolation of nucleon magnetic form factors
Author: Wang, P.
Leinweber, D.
Thomas, A.
Young, R.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2007; 75(7):073012-1-073012-10
Publisher: American Physical Soc
Issue Date: 2007
ISSN: 1550-7998
1550-2368
Statement of
Responsibility: 
P. Wang, D. B. Leinweber, A. W. Thomas, and R. D. Young
Abstract: The extrapolation of nucleon magnetic form factors calculated within lattice QCD is investigated within a framework based upon heavy baryon chiral effective-field theory. All one-loop graphs are considered at arbitrary momentum transfer and all octet and decuplet baryons are included in the intermediate states. Finite range regularisation is applied to improve the convergence in the quark-mass expansion. At each value of the momentum transfer (Q2), a separate extrapolation to the physical pion mass is carried out as a function of m alone. Because of the large values of Q2 involved, the role of the pion form factor in the standard pion-loop integrals is also investigated. The resulting values of the form factors at the physical pion mass are compared with experimental data as a function of Q2 and demonstrate the utility and accuracy of the chiral extrapolation methods presented herein.
Keywords: High Energy Physics - Phenomenology (hep-ph)
Rights: ©2007 American Physical Society
RMID: 0020070731
DOI: 10.1103/PhysRevD.75.073012
Appears in Collections:Physics publications

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