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arXiv 1005.2076hep-ph
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标量单圈四点积分

Scalar one-loop 4-point integrals

A. Denner, S. Dittmaier

摘要:

我们提供了一套完整的结果出现在单圈计算的标量4点函数QCD,QED,电弱标准模型和流行的扩展。复杂的内部质量,这是需要计算涉及不稳定的粒子,支持整个,而复杂的动量不支持。特别是,对于最一般的,经常的情况下,我们提出了两个独立的结果,在72和32 dietrums。此外,我们列出明确的结果,所有软和/或共线奇异的情况下,在维正则化,质量正则化,并在正则化的混合型。对于在实际应用中很少出现的修正Cayley行列式为零的特殊情况,本文没有考虑。

英文摘要:

We provide a complete set of results for the scalar 4-point function appearing in one-loop calculations in QCD, QED, the electroweak Standard Model and popular extensions thereof. Complex internal masses, which are needed for calculations involving unstable particles, are supported throughout, whereas complex momenta are not supported. In particular, for the most general, regular case we present two independent results in terms of 72 and 32 dilogarithms. In addition we list explicit results for all soft- and/or collinear-singular cases in dimensional regularization, mass regularization, and in regularizations of mixed type. The exceptional case with a vanishing modified Cayley determinant, which hardly appears in applications, is not considered.

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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