Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-11-11
Phys.Rev.D69:014005,2004
Physics
High Energy Physics
High Energy Physics - Lattice
Published version of the RevTeX 4 manuscript, 6 figures, 24 tables, 22 pages
Scientific paper
10.1103/PhysRevD.69.014005
The chiral nonanalytic behaviour of quark-flavor contributions to the magnetic moments of octet baryons are determined in full, quenched and partially-quenched QCD, using an intuitive and efficient diagrammatic formulation of quenched and partially-quenched chiral perturbation theory. The technique provides a separation of quark-sector magnetic-moment contributions into direct sea-quark loop, valence-quark, indirect sea-quark loop and quenched valence contributions, the latter being the conventional view of the quenched approximation. Both meson and baryon mass violations of SU(3)-flavor symmetry are accounted for. Following a comprehensive examination of the individual quark-sector contributions to octet baryon magnetic moments, numerous opportunities to observe and test the underlying structure of baryons and the nature of chiral nonanalytic behavior in QCD and its quenched variants are discussed. In particular, the valence u-quark contribution to the proton magnetic moment provides the optimal opportunity to directly view nonanalytic behavior associated with the meson cloud of full QCD and the quenched meson cloud of quenched QCD. The u quark in Sigma^+ provides the best opportunity to display the artifacts of the quenched approximation.
No associations
LandOfFree
Quark Contributions to Baryon Magnetic Moments in Full, Quenched and Partially Quenched QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quark Contributions to Baryon Magnetic Moments in Full, Quenched and Partially Quenched QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quark Contributions to Baryon Magnetic Moments in Full, Quenched and Partially Quenched QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-28093