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arXiv 2205.03345hep-ph
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用级数展开法求任意复质量的Feynman积分

Evaluation of Feynman integrals with arbitrary complex masses via series expansions

Tommaso Armadillo, Roberto Bonciani, Simone Devoto, Narayan Rana, Alessandro Vicini

摘要:

我们提出了一个算法来评估多圈费曼积分与任意数量的内部大量的线,与质量是在一般的复值,其实施的\textsc{Mathematica}包\textsc{SeaSyde}。该实施方案解决了由主积分满足的微分方程系统的级数展开。在与其他现有的代码的差异,解析延续的解决方案是在复杂的平面相关联的每个运动学不变量。我们提出的评估结果的主积分相关的NNLO QCD-EW修正中性电流的Drell-Yan过程。

英文摘要:

We present an algorithm to evaluate multiloop Feynman integrals with an arbitrary number of internal massive lines, with the masses being in general complex-valued, and its implementation in the \textsc{Mathematica} package \textsc{SeaSyde}. The implementation solves by series expansions the system of differential equations satisfied by the Master Integrals. At variance with respect to other existing codes, the analytical continuation of the solution is performed in the complex plane associated to each kinematical invariant. We present the results of the evaluation of the Master Integrals relevant for the NNLO QCD-EW corrections to the neutral-current Drell-Yan 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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