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重子电磁跃迁形状因子的相对论Faddeev方法

Electromagnetic transition form factors of baryons in a relativistic Faddeev approach

Reinhard Alkofer, Christian S. Fischer, Helios Sanchis-Alepuz

摘要:

本文简要地回顾了以QCD的Dyson-Schwinger和Bethe-Salpeter方程为基础的重子相对论性三夸克束缚态的协变Faddeev方法。所有的元素,特别是重子的三体波函数,夸克传播子和缀饰夸克-光子顶点,都是从一个良好建立的夸克-胶子相互作用近似计算的。选择以前的结果,这种方法的频谱和弹性电磁形状因子的基态重子和共振的报告。本次演讲的主要重点是介绍和讨论的结果,从最近的调查电磁跃迁形状因子之间的基态八重态和十重态重子,以及八重态的$Σ^0$到$Λ$过渡。

英文摘要:

The covariant Faddeev approach which describes baryons as relativistic three-quark bound states and is based on the Dyson-Schwinger and Bethe-Salpeter equations of QCD is briefly reviewed. All elements, including especially the baryons' three-body-wave-functions, the quark propagators and the dressed quark-photon vertex, are calculated from a well-established approximation for the quark-gluon interaction. Selected previous results of this approach for the spectrum and elastic electromagnetic form factors of ground-state baryons and resonances are reported. The main focus of this talk is a presentation and discussion of results from a recent investigation of the electromagnetic transition form factors between ground-state octet and decuplet baryons as well as the octet-only $Σ^0$ to $Λ$ transition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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