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arXiv 1806.02593hep-ph
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数值方法与四点双圈Higgs振幅

Numerical Methods and the 4-point 2-loop Higgs amplitudes

S. P. Jones, B. Ruijl

摘要:

一些困难时所面临的计算多回路振幅与几个质量尺度进行审查。然后,我们专注于一个特定的困难,费曼积分的评价,并介绍了程序pySecDec,它可以用来数值计算这样的积分。一些新的功能,特别是扇区对称发现者,这可以帮助减少数字集成后的扇区分解的扇区的数量,进行了说明。

英文摘要:

Some of the difficulties faced when calculating multi-loop amplitudes with several mass scales are reviewed. We then focus on one particular difficulty, the evaluation of the Feynman integrals, and introduce the program pySecDec which can be used to numerically compute such integrals. Some of the new features and in particular the sector symmetry finder, which can help to reduce the number of sectors to be numerically integrated after sector decomposition, are described.

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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