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SU(3) breaking and baryon magnetic moments

J. W. Bos·D. Chang·S. C. Lee·Y. C. Lin·H. H. Shih
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Abstract

We show that the magnetic moments of the octet baryons can be fitted to an accuracy of 1.5 percent by a phenomenological Lagrangian in which SU(3) breaking corrections appear only linearly. This is in contrast to conventional chiral perturbation theory in which corrections non-analytic in SU(3) breaking dominate and tend to spoil the agreement with the data. Motivated by this observation, we propose a modified scheme for chiral perturbation theory that gives rise to a similar linear breaking of SU(3) symmetry. (Pacs 13.40.Em, 14.20.-c, 11.30.Rd)

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J. W. Bos, D. Chang, S. C. Lee, Y. C. Lin, H. H. Shih. 1997-01-15. SU(3) breaking and baryon magnetic moments. https://arxiv.org/abs/hep-ph/9602251

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