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arXiv 0912.2876hep-ph
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量子场论中三夸克问题的协变解:核子

Covariant solution of the three-quark problem in quantum field theory: the nucleon

G. Eichmann, R. Alkofer, A. Krassnigg, D. Nicmorus

摘要:

我们提供了详细的核子的协变Faddeev方程在一个明确的三夸克方法最近的解决方案。三夸克振幅的完整庞加莱协变结构是通过分波分解得到的正交基实现的。我们采用彩虹阶梯胶子交换内核,允许介子贝特-萨尔彼得和重子夸克双夸克的研究进行比较。我们详细描述了三夸克振幅的结构,并将其与最近出版物中广泛使用的符号进行了比较。最后,我们讨论了核子振幅的第一个数值结果。

英文摘要:

We provide details on a recent solution of the nucleon's covariant Faddeev equation in an explicit three-quark approach. The full Poincare-covariant structure of the three-quark amplitude is implemented through an orthogonal basis obtained from a partial-wave decomposition. We employ a rainbow-ladder gluon exchange kernel which allows for a comparison with meson Bethe-Salpeter and baryon quark-diquark studies. We describe the construction of the three-quark amplitude in full detail and compare it to a notation widespread in recent publications. Finally, we discuss first numerical results for the nucleon's amplitude.

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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