The recently proposed method (OPP) to extract the coefficients of the scalar one-loop integrals to any multi-particle (sub)-amplitude is described. Within this method no analytical information on the structure of the amplitude is needed, allowing for a purely numerical, but still algebraic, implementation of the algorithm. The algorithm can be used to automatically perform one-loop calculation both in QCD and in the EW Theory. As an application, we give QCD one-loop results for the process p p o ZZZ at the LHC.
展开▼
机译：描述了最近提出的将标量一环积分的系数提取到任何多粒子（子）振幅的方法（OPP）。在这种方法中，不需要有关幅度结构的分析信息，从而可以实现算法的纯数值形式，但仍是代数形式。该算法可用于在QCD和EW理论中自动执行单循环计算。作为应用程序，我们为LHC的ZZZ给出了过程p p QCD的单循环结果。
展开▼
