SU(3) breaking and baryon magnetic moments
高能物理 - 唯象学
2008-02-03 v3
摘要
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)
引用
@article{arxiv.hep-ph/9602251,
title = {SU(3) breaking and baryon magnetic moments},
author = {J. W. Bos and D. Chang and S. C. Lee and Y. C. Lin and H. H. Shih},
journal= {arXiv preprint arXiv:hep-ph/9602251},
year = {2008}
}
备注
7 pages of Latex, no figures, version to be published in Chin. J. Phys. (Taipei) (1997)