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arXiv 1607.07538hep-ph
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Minkowski区域中大量双环Mellin-Barnes积分的数值积分

Numerical integration of massive two-loop Mellin-Barnes integrals in Minkowskian regions

Ievgen Dubovyk, Janusz Gluza, Tord Riemann, Johann Usovitsch

摘要:

综述了Mellin-Barnes(MB)方法在粒子物理微扰计算中的应用。新版本的AMBRE软件包,构建平面和非平面MB表示的简短讨论。本文首次提出了一个数值计算软件包MBnumerics.m,它能够在闵可夫斯基区域内高精度地计算多维MB积分。给出了大量的顶点积分,其中包括阈值效应和几个尺度参数的例子。

英文摘要:

Mellin-Barnes (MB) techniques applied to integrals emerging in particle physics perturbative calculations are summarized. New versions of AMBRE packages which construct planar and nonplanar MB representations are shortly discussed. The numerical package MBnumerics.m is presented for the first time which is able to calculate with a high precision multidimensional MB integrals in Minkowskian regions. Examples are given for massive vertex integrals which include threshold effects and several scale parameters.

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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