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Type: Journal article
Title: Chiral analysis of quenched baryon masses
Author: Young, R.
Leinweber, D.
Thomas, A.
Wright, S.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2002; 66(9):094507-1-094507-10
Publisher: American Physical Soc
Issue Date: 2002
ISSN: 1550-7998
Statement of
R. D. Young, D. B. Leinweber, A. W. Thomas, and S. V. Wright
Abstract: We extend to quenched QCD an earlier investigation of the chiral structure of the masses of the nucleon and the delta in lattice simulations of full QCD. Even after including the meson-loop self-energies which give rise to the leading and next-to-leading nonanalytic behavior (and hence the most rapid variation in the region of light quark mass), we find surprisingly little curvature in the quenched case. Replacing these meson-loop self-energies by the corresponding terms in full QCD yields a remarkable level of agreement with the results of the full QCD simulations. This comparison leads to a very good understanding of the origins of the mass splitting between these baryons.
Rights: ©2002 American Physical Society
RMID: 0020022240
DOI: 10.1103/PhysRevD.66.094507
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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