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arXiv 1111.2055hep-phnucl-th
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味对称破缺的1/N_c展开中的重子磁矩

Baryon Magnetic Moments in the 1/N_c Expansion with Flavor Symmetry Breaking

Elizabeth Jenkins

摘要:

在1/N_c展开、SU(3)味对称破缺和同位旋对称破缺下,分析了基态重子的磁矩和跃迁磁矩。在实验数据中有明确的证据表明,在1/N_c和风味破坏的组合膨胀的磁矩的层次。相对于其他强子观测量,磁矩中的SU(3)破缺预计会增强,并且发现了显著的SU(3)破缺。

英文摘要:

The magnetic moments and transition magnetic moments of the ground state baryons are analyzed in an expansion in 1/N_c, SU(3) flavor symmetry breaking and isospin symmetry breaking. There is clear evidence in the experimental data for the hierarchy of magnetic moments of the combined expansion in 1/N_c and flavor breaking. SU(3) breaking in the magnetic moments is expected to be enhanced relative to that of other hadronic observables, and significant SU(3) breaking is found.

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