2001/12/17 by Derek B. Leinweber · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1016/s0920-5632(02)01389-0
published as Nucl.Phys.Proc.Suppl. 109A (2002) 45-49 · Presented 12 July '01 at the Workshop on Lattice Hadron Physics, Cairns, Queensland, Australia
arxiv created 2001/12/17 · openalex publication_date 2002/05/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A new intuitive method for the rapid calculation of the leading nonanalytic behavior of hadronic observables in quenched chiral perturbation theory is presented. After proving the technique in a consideration of baryon masses, the quenched magnetic moments of octet baryons are addressed. The technique provides a separation of magnetic moment contributions into full, sea, valence and quenched valence contributions, the latter being the conventional view of the quenched approximation. Both baryon mass and meson mass violations of SU(3)-flavor symmetry are accounted for. A comprehensive examination of the individual quark-sector contributions to octet baryon magnetic moments reveals that the u-quark contribution to the proton magnetic moment provides an optimal opportunity to directly view nonanalytic behavior associated with the quenched meson cloud of baryons in the quenched approximation.