在NLO QCD朝向pp -> VVj：玻色子对三重矢量玻色子产生和喷流的贡献
Towards pp -> VVjj at NLO QCD: Bosonic contributions to triple vector boson production plus jet
摘要：
在本工作中，我们给出了pp -> VVjj + X的一些非线性QCD修正。基于FeynCalc结构的Mathematica程序自动简化了一组幅度到秩5的六边形水平，已为此目的创建。我们关注两种不同的拓扑结构。第一个是四重电弱矢量玻色子产生所需的所有虚贡献，即pp -> VVVV + X。在第二部分中，计算了剩余的“玻色”修正，以电弱三重矢量玻色子产生与一个额外的喷流（pp -> VVV j + X）。给出了V=（W，Z，gamma）时VVVV和VVVj产生的玻色子贡献的红外发散的因式分解公式.与评价的六边形的秩5的稳定性问题进行了研究。FORTRAN子程序的CPU时间为2毫秒，似乎与其他更复杂的方法有竞争力。此外，在附录A中，给出了获得外动量约定中直到六边形水平的张量系数的主方程，包括小革兰行列式所需的主方程。
英文摘要：
In this work, some of the NLO QCD corrections for pp -> VVjj + X are presented. A program in Mathematica based on the structure of FeynCalc which automatically simplifies a set of amplitudes up to the hexagon level of rank 5 has been created for this purpose. We focus on two different topologies. The first involves all the virtual contributions needed for quadruple electroweak vector boson production, i.e. pp -> VVVV + X. In the second, the remaining "bosonic" corrections to electroweak triple vector boson production with an additional jet (pp -> VVV j + X) are computed. We show the factorization formula of the infrared divergences of the bosonic contributions for VVVV and VVVj production with V=(W,Z,gamma). Stability issues associated with the evaluation of the hexagons up to rank 5 are studied. The CPU time of the FORTRAN subroutines rounds the 2 milliseconds and seems to be competitive with other more sophisticated methods. Additionally, in Appendix A the master equations to obtain the tensor coefficients up to the hexagon level in the external momenta convention are presented including the ones needed for small Gram determinants.
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