Colour: a computer program for QCD colour factor calculations

Abstract A computer program for evaluating colour factors of QCD Feynman diagrams is presented, and illustrative examples on how to use the program to calculate nontrivial colour factors are given. The program and the discussion in this paper is based on a diagrammatic approach to colour factors. Title of program: colour Catalogue Id: ADEW_v1_0 Nature of problem In many QCD Feynman diagrams there is a need to calculate the colour factor. This program calculates colour factors fast and accurately. Versions of this program held in the CPC repository in Mendeley Data ADEW_v1_0; colour; 10.1016/S0010-4655(96)00140-3 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 本文提出一款用于计算量子色动力学（Quantum Chromodynamics, QCD）费曼图（Feynman diagram）色因子的计算机程序，并给出了利用该程序求解非平凡色因子的示例。本文所述程序与讨论均基于色因子的图解方法。 程序名称：colour 目录编号：ADEW_v1_0 问题描述 在诸多量子色动力学费曼图的相关计算中，均需求解色因子。本程序可快速且精准地完成色因子计算。 本程序收录于Mendeley数据平台的CPC程序库版本： ADEW_v1_0; colour; 10.1016/S0010-4655(96)00140-3 本程序源自贝尔法斯特女王大学托管的CPC程序库（1969-2019年）