BCFW recursion for off-shell gluons

被引：0
|
作者：
A. van Hameren
机构：
[1] Polish Academy of Sciences,The H. Niewodniczanski Institute of Nuclear Physics
来源：
Journal of High Energy Physics | / 2014卷
关键词：
Scattering Amplitudes; QCD;
D O I：
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学科分类号：
摘要：
It is shown how tree-level multi-gluon helicity amplitudes with an arbitrary number of off-shell external gluons can be calculated via BCFW recursion. Compact expressions for helicity amplitudes for scattering processes of three and four gluons, with up to three of them off-shell, are presented. Also, maximum-helicity-violating configurations are identified for up to two off-shell gluons, and the expressions for their helicity amplitudes for an arbitrary number of on-shell gluons are derived.
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