The Okubo relation for the baryon magnetic moments and chiral perturbationtheory

Authors
Bos, JW Chang, D Lee, SC Shih, HH
Citation
Jw. Bos et al., The Okubo relation for the baryon magnetic moments and chiral perturbationtheory, CHIN J PHYS, 36(6), 1998, pp. 778-790
Citations number
7
Categorie Soggetti
Physics
Journal title
CHINESE JOURNAL OF PHYSICS
ISSN journal
05779073 → ACNP
Volume
36
Issue
6
Year of publication
1998
Pages
778 - 790
Database
ISI
SICI code
0577-9073(199812)36:6<778:TORFTB>2.0.ZU;2-I
Abstract
We analyze the Okubo SU(3) relation among the hyperon magnetic moments in t he usual scheme of chiral perturbation theory (ChPT). We classify the one-l oop diagrams, including those with intermediate decuplet baryons, in a simp le way according to whether or not they satisfy the Okubo relation. Contrar y to the conventional wisdom, we find that one-loop contributions to the hy peron magnetic moments in general violate the Okubo relation if the physica l masses are employed for the meson propagators in the loops.