Color-flow decomposition of QCD amplitudes

被引：100

作者：

Maltoni, F

Paul, K

Stelzer, T

Willenbrock, S

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[2] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.67.014026

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We introduce a new color decomposition for multiparton amplitudes in QCD, free of fundamental-representation matrices and structure constants. This decomposition has a physical interpretation in terms of the flow of color, which makes it ideal for merging with shower Monte Carlo programs. The color-flow decomposition allows for very efficient evaluation of amplitudes with many quarks and gluons, many times faster than the standard color decomposition based on fundamental-representation matrices. This will increase the speed of event generators for multijet processes, which are the principal backgrounds to signals of new physics at colliders.

引用

页数：12

共 30 条

[11] New color decompositions for gauge amplitudes at tree and loop level [J].