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arXiv 0901.3414hep-phhep-th
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三环软反常维数矩阵的物质依赖性

Matter Dependence of the Three-Loop Soft Anomalous Dimension Matrix

Lance J. Dixon

摘要:

软胶子交换对QCD硬散射的重新表示需要一个反常维数矩阵,它是通过两个循环计算的。双环矩阵与单环矩阵成比例。最近,有人建议将这种比例扩展到更高的环路。人们可以通过计算这个矩阵对一般规范理论中物质含量的依赖性来检验这些建议。结果表明,对于物质依赖的部分的比例延伸到三个循环的任意无质量的过程。

英文摘要:

The resummation of soft gluon exchange for QCD hard scattering requires a matrix of anomalous dimensions, which has been computed through two loops. The two-loop matrix is proportional to the one-loop matrix. Recently there have been proposals that this proportionality extends to higher loops. One can test such proposals by computing the dependence of this matrix on the matter content in a generic gauge theory. It is shown that for the matter-dependent part the proportionality extends to three loops for arbitrary massless processes.

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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