[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
来源:
EUROPEAN PHYSICAL JOURNAL C
|
2006年
/
45卷
/
03期
关键词:
D O I:
10.1140/epjc/s2005-02467-6
中图分类号:
O412 [相对论、场论];
O572.2 [粒子物理学];
学科分类号:
摘要:
I report on an implementation of an algorithm for the automated numerical calculation of spin-and colour-correlated Born matrix elements in QCD. These spin- and colour-correlated matrix elements are needed for NLO calculations in combination with the subtraction method. Both massless and massive quarks are considered. There are no restrictions on the number of external particles. As a trivial sub-case, the algorithm also applies to Born matrix elements without any correlations. These are sufficient for leading order calculations.