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Title: Baryon octet magnetic moments to all orders in flavor breaking: An application to the problem of the strangeness in the nucleon

Abstract

Using the general QCD parametrization (GP) we display the magnetic moments of the octet baryons including all flavor breaking terms to any order. The hierarchy of the GP parameters allows to estimate a parameter g{sub 0} related to the quark loops contribution of the proton magnetic moment; its magnitude is predicted to be inside a comparatively small interval including the value given recently by Leinweber et al. from a lattice QCD calculation.

Authors:
;  [1]
  1. Universita di Genova and Istituto Nazionale di Fisica Nucleare, Sezione di Genova (Italy)
Publication Date:
OSTI Identifier:
21020244
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.073007; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BARYON OCTETS; FLAVOR MODEL; LATTICE FIELD THEORY; MAGNETIC MOMENTS; PROTONS; QUANTUM CHROMODYNAMICS; QUARKS; STRANGENESS

Citation Formats

Dillon, G., and Morpurgo, G. Baryon octet magnetic moments to all orders in flavor breaking: An application to the problem of the strangeness in the nucleon. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.073007.
Dillon, G., & Morpurgo, G. Baryon octet magnetic moments to all orders in flavor breaking: An application to the problem of the strangeness in the nucleon. United States. doi:10.1103/PHYSREVD.75.073007.
Dillon, G., and Morpurgo, G. Sun . "Baryon octet magnetic moments to all orders in flavor breaking: An application to the problem of the strangeness in the nucleon". United States. doi:10.1103/PHYSREVD.75.073007.
@article{osti_21020244,
title = {Baryon octet magnetic moments to all orders in flavor breaking: An application to the problem of the strangeness in the nucleon},
author = {Dillon, G. and Morpurgo, G.},
abstractNote = {Using the general QCD parametrization (GP) we display the magnetic moments of the octet baryons including all flavor breaking terms to any order. The hierarchy of the GP parameters allows to estimate a parameter g{sub 0} related to the quark loops contribution of the proton magnetic moment; its magnitude is predicted to be inside a comparatively small interval including the value given recently by Leinweber et al. from a lattice QCD calculation.},
doi = {10.1103/PHYSREVD.75.073007},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}
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  • The lightest baryon octet is studied within a covariant and confining Nambu-Jona-Lasinio model. By solving the Poincare covariant Faddeev equations-including scalar and axialvector diquarks-we determine the baryon octet masses and axial charges for strangeness conserving transitions. For the axial charges the degree of violation of SU(3) flavor symmetry, arising because of the strange spectator quark(s), is found to be no more than 10%.