Chiral analysis of quenched baryon masses

Young, RD, Leinweber, DB, Thomas, AW and Wright, SV (2002) Chiral analysis of quenched baryon masses. Physical Review D, 66 (9). 094507-. ISSN 0556-2821, 1089-4918

PDF e094507.pdf - Unspecified Access to this file is embargoed until Unspecified. Download (118kB)

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.

Item Type:	Article
Additional Information:	LTH 537. arXiv Number: arXiv:hep-lat/0205017v1. Additional Citation Information: PHYSICAL REVIEW D 66, 094507 (2002); 0556-2821/2002/66(9)/094507(10). 10 pages. Published 27 November 2002. Issue: November 2002.
Uncontrolled Keywords:	LATTICE QCD, PERTURBATION-THEORY, MAGNETIC-MOMENTS, HADRON SPECTRUM, CHARGE RADII, NUCLEON, EXTRAPOLATIONS, LOGARITHMS, SYMMETRY, REGIME
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	16 Apr 2009 09:24
Last Modified:	24 May 2025 04:11
DOI:	10.1103/physrevd.66.094507
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/547