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arXiv 2408.05201hep-thhep-ph
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双圈五点双质量平面积分与Wilson圈中的双重拉格朗日插入

Two-Loop Five-Point Two-Mass Planar Integrals and Double Lagrangian Insertions in a Wilson Loop

Samuel Abreu, Dmitry Chicherin, Vasily Sotnikov, Simone Zoia

AI总结:

本文构造了双圈五点双质量平面积分的纯基底与标准微分方程,并首次计算了四尖点Wilson圈中的双重拉格朗日插入至双圈,证明其有限、共形不变且具有均匀超越性。

摘要:

我们考虑了具有两个离壳外腿的完整平面双圈五点费曼积分集合。这些积分例如与在强子对撞机上伴随一个喷注或一个光子产生的两个重矢量玻色子的二阶QCD修正计算相关。我们为这些积分构造了纯基底,并通过有限域上的数值采样重建了其标准形式的解析微分方程。新识别的符号字母表(迄今为止最复杂的之一)为自举方法提供了有价值的数据。然后我们应用我们的结果,在平面最大超对称杨-米尔斯理论中启动对四尖点Wilson圈中双重拉格朗日插入的研究,计算至双圈。我们观察到它是有限的,在四维中共形不变的,并且具有均匀超越性。此外,我们提供了其在amplituhedron区域内至双圈正性的数值证据。

英文摘要:

We consider the complete set of planar two-loop five-point Feynman integrals with two off-shell external legs. These integrals are relevant, for instance, for the calculation of the second-order QCD corrections to the production of two heavy vector bosons in association with a jet or a photon at a hadron collider. We construct pure bases for these integrals and reconstruct their analytic differential equations in canonical form through numerical sampling over finite fields. The newly identified symbol alphabet, one of the most complex to date, provides valuable data for bootstrap methods. We then apply our results to initiate the study of double Lagrangian insertions in a four-cusp Wilson loop in planar maximally supersymmetric Yang-Mills theory, computing it through two loops. We observe that it is finite, conformally invariant in four dimensions, and of uniform transcendentality. Furthermore, we provide numerical evidence for its positivity within the amplituhedron region through two loops.

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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