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arXiv 2109.14835hep-ph
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Dyson格式中无正则化的轴向矢量流异常问题

Axial vector current anomaly problem without regularization in Dyson scheme

Shou-Shan Bao, Shi-Yuan Li, Zong-Guo Si

摘要:

动量空间中单个费曼图的圈动量可以在"Dyson方案"中明确地指定,而不需要参考完整集合中的其他费曼图,指定某个过程的耦合常数的某个阶。这一事实和戴森的原始论文中提供的方案被应用于一个典型的相关问题,即,"轴向矢量流异常"的三角图。计算是在四维闵可夫斯基时空中直接进行的,不需要任何正则化的帮助。线性发散项在无不确定性的情况下被取消。研究了对称积分(张量积分)的几何发散性,得到了一致的规范不变结果。

英文摘要:

The loop momenta of a single Feynman diagram in momentum space can be assigned unambiguously within the 'Dyson scheme' without referring to the other Feynman diagrams in the complete set to some order of coupling constant for the certain process. This fact and the scheme which were provided in Dyson's original paper are applied to a typical relevant problem, i.e., the triangle diagrams of the 'axial vector current anomaly'. The calculation is done in four-dimension Minkowski space-time straightforwardly without the aid of any regularization. The linearly divergent terms are canceled sans incertitude. The logarithmically divergent symmetric integration (tensor integration) is investigated for obtaining the consistent and gauge invariant result.

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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