零射束在N$^3$LO处的函数

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022) Pub Date : 2022-07-15 DOI:10.22323/1.416.0027

A. Behring

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引用次数: 1

摘要

零喷射光束函数描述了初始状态分支的共线发射，并出现在小零喷射极限下的截面分解定理中。它们是强子对撞机产生彩色单线态的切片方案的重要组成部分。我们报告了我们在QCD中以次-次-次-次-次-前阶(N$^3$LO)对这个量的持续计算，特别强调了部分分数关系和主积分计算的方面。

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Zero-jettiness beam functions at N$^3$LO

The zero-jettiness beam functions describe collinear emissions from initial state legs and appear in the factorisation theorem for cross sections in the limit of small zero-jettiness. They are an important building block for slicing schemes for colour-singlet production at hadron colliders. We report on our ongoing calculation of this quantity at next-to-next-to-next-to-leading order (N$^3$LO) in QCD, highlighting in particular the aspects of partial fraction relations and the calculation of master integrals.

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Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022)

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