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arXiv 1706.06458hep-phhep-exhep-latnucl-exnucl-th
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手征微扰理论中的二重态到八重态重子跃迁

Decuplet to octet baryon transitions in chiral perturbation theory

Hao-Song Li, Zhan-Wei Liu, Xiao-Lin Chen, Wei-Zhen Deng, Shi-Lin Zhu

摘要:

在重子手征微扰理论的框架下,系统地研究了十重态(T)到八重态(B)重子($T\rightarrow Bγ$)的磁矩到次-次-首阶跃迁和电四重态到次-首阶跃迁.我们的计算包括了环中的中间十重态和八重态重子态的贡献。我们的结果表明手征展开的收敛性相当好,并且与实验数据吻合。这些解析表达式对于十重态电磁性质晶格模拟的手征外推是有用的。

英文摘要:

We have systematically investigated the decuplet (T) to octet (B) baryon ($T\rightarrow Bγ$) transition magnetic moments to the next-to-next-to-leading order and electric quadruple moments to the next-to-leading order in the framework of the heavy baryon chiral perturbation theory. Our calculation includes the contributions from both the intermediate decuplet and octet baryon states in the loops. Our results show reasonably good convergence of the chiral expansion and agreement with the experimental data. The analytical expressions may be useful to the chiral extrapolation of the lattice simulations of the decuplet electromagnetic properties.

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