Infrared factorization of tree-level QCD amplitudes at the next-to-next-to-leading order and beyond

Preprint

31 August 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9908523

Abstract

We study the infrared behaviour of tree-level QCD amplitudes and we derive infrared-factorization formulae that are valid at any perturbative order. We explicitly compute all the universal infrared factors that control the singularities in the various soft and/or collinear limits at O(as^2).

Keywords

LEVEL QCD AMPLITUDES
INFRARED FACTORS
TREE LEVEL QCD
SINGULARITIES
COLLINEAR

All Related Versions

Version 1, 1999-08-31, ArXiv
Published version: Nuclear Physics B, 570 (1-2), 287.

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