One-loop triple collinear splitting amplitudes in QCD

被引：17
|
作者：
Badger, Simon [1 ]
Buciuni, Francesco [1 ]
Peraro, Tiziano [1 ]
机构：
[1] Univ Edinburgh, Sch Phys & Astron, Higgs Ctr Theoret Phys, Edinburgh EH9 3JZ, Midlothian, Scotland
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 09期
关键词：
Scattering Amplitudes; Strong Coupling Expansion; QCD; GLUON-FUSION PRODUCTION; CROSS-SECTIONS; BETA-FUNCTION; FACTORIZATION; TREE; BEHAVIOR; LIMIT;
D O I：
10.1007/JHEP09(2015)188
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：
We study the factorisation properties of one-loop scattering amplitudes in the triple collinear limit and extract the universal splitting amplitudes for processes initiated by a gluon. The splitting amplitudes are derived from the analytic Higgs plus four partons amplitudes. We present compact results for primitive helicity splitting amplitudes making use of super-symmetric decompositions. The universality of the collinear factorisation is checked numerically against the full colour six parton squared matrix elements.
引用
收藏
页数：29
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