arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2012.10635hep-ph
收藏

量纲调节器中任意阶的五角积分

Pentagon integrals to arbitrary order in the dimensional regulator

Nikolaos Syrrakos

摘要:

我们分析计算单圈五点主积分,\textit{pentagon integrals},与多达一个壳外腿任意阶的尺寸调节器在$d=4-2ε$时空维度。利用简化微分方程方法,构造了满足单变量正则微分方程的带一个离壳边的五边形族主积分的纯基。相关的边界项给出了封闭的形式,包括一个超几何函数,可以扩展到任意阶的尺寸调节器使用\texttt{Mathematica}包\texttt{HypExp}。因此,人们可以得到解决的典范微分方程的贡恰洛夫多项式的任意超越重量。作为单质量五边形族的一种特殊极限,我们得到了无质量五边形族用纯泛超越函数表示的完全解析结果。对于这两个家庭,我们提供明确的解决方案,在Goncharov Polylogartihms的重量四。

英文摘要:

We analytically calculate one-loop five-point Master Integrals, \textit{pentagon integrals}, with up to one off-shell leg to arbitrary order in the dimensional regulator in $d=4-2ε$ space-time dimensions. A pure basis of Master Integrals is constructed for the pentagon family with one off-shell leg, satisfying a single-variable canonical differential equation in the Simplified Differential Equations approach. The relevant boundary terms are given in closed form, including a hypergeometric function which can be expanded to arbitrary order in the dimensional regulator using the \texttt{Mathematica} package \texttt{HypExp}. Thus one can obtain solutions of the canonical differential equation in terms of Goncharov Polylogartihms of arbitrary transcendental weight. As a special limit of the one-mass pentagon family, we obtain a fully analytic result for the massless pentagon family in terms of pure and universally transcendental functions. For both families we provide explicit solutions in terms of Goncharov Polylogartihms up to weight four.

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。

↑