The Okubo relation for the baryon magnetic moments and chiral perturbation theory

Details The Okubo relation for the baryon magnetic moments and chiral perturbation theory The Okubo relation for the baryon magnetic moments and chiral perturbation theory

1997-02-06

arxiv.org/abs/hep-ph/9702272v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

16pages, latex, two figures, the manuscript revised into a longer one

Scientific paper

We analyze the Okubo SU(3) relation among the hyperon magnetic moments in the usual scheme of chiral perturbation theory (ChPT). We classify the one-loop diagrams, including those with intermediate decuplet baryons, in a simple way according to whether or not they satisfy the Okubo relation. Contrary to the conventional wisdom, we find that one-loop contributions to the hyperon magnetic moments in general violate the Okubo relation if the physical masses are employed for the meson propagators in the loops.

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