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Type: Journal article
Title: First moments of nucleon generalized parton distributions
Author: Wang, P.
Thomas, A.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2010; 81(11):114015-1-114015-11
Publisher: American Physical Soc
Issue Date: 2010
ISSN: 1550-7998
Statement of
P. Wang and A. W. Thomas
Abstract: We extrapolate the first moments of the generalized parton distributions using heavy baryon chiral perturbation theory. The calculation is based on the one loop level with the finite range regularization. The description of the lattice data is satisfactory, and the extrapolated moments at physical pion mass are consistent with the results obtained with dimensional regularization, although the extrapolation in the momentum transfer to t ¼ 0 does show sensitivity to form factor effects, which lie outside the realm of chiral perturbation theory. We discuss the significance of the results in the light of modern experiments as well as QCD inspired models.
Rights: ©2010 American Physical Society
DOI: 10.1103/PhysRevD.81.114015
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