论文标题
零杰特尼斯光束功能在n $^3 $ lo
Zero-jettiness beam functions at N$^3$LO
论文作者
论文摘要
零果束的函数描述了初始状态腿的共线发射，并出现在小零杰特的极限的分解定理中。它们是在强子山子切片中切片方案的重要组成部分。我们在QCD的近代到接头订单（n $^3 $ lo）上对此数量进行了持续的计算，尤其强调了部分分数关系的方面和主积分的计算。
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.
