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arXiv 1106.0155hep-ph
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彩色FKS减影

Colourful FKS subtraction

Stefano Frixione

摘要:

我制定了一个颜色友好的方式的FKS方法计算QCD截面在次领先的顺序精度。这是通过定义的减法项的平方矩阵元素,构造与单一的颜色装饰或颜色排序的振幅对。后一种方法依赖于彩色流的使用,对于$N$中的所有阶数都是精确的,因此特别适合于被组织为1/N中的系统扩展。

英文摘要:

I formulate in a colour-friendly way the FKS method for the computation of QCD cross sections at the next-to-leading order accuracy. This is achieved through the definition of subtraction terms for squared matrix elements, constructed with single colour-dressed or pairs of colour-ordered amplitudes. The latter approach relies on the use of colour flows, is exact to all orders in $N$, and is thus particularly suited to being organized as a systematic expansion in 1/N.

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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