2001/11/27 by Yu. A. Simonov, J. A. Tjon, J. Weda +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.65.094013
published as Phys.Rev. D65 (2002) 094013 · 24 pages Revtex
arxiv created 2001/11/27 · openalex publication_date 2002/05/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03
An effective quark Lagrangian is derived from first principles through bilocal gluon field correlators. It is used to write down equations for baryons, containing both perturbative and nonperturbative fields. As a result one obtains magnetic moments of octet and decuplet baryons without the introduction of constituent quark masses and using only string tension as input. Magnetic moments come out on average in reasonable agreement with experiment, except for nucleons and \ensuremathΣ^\ensuremath-. The predictions for the proton and neutron are shown to be in close agreement with the empirical values once we choose the string tension to yield the proper nucleon mass. Pionic corrections to the nucleon magnetic moments have been estimated. In particular, the total result of the two-body current contributions is found to be small. Inclusion of the anomalous magnetic moment contributions from pion and kaon loops leads to an improvement of the predictions.