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Infrared factorization of tree-level QCD amplitudes at the next-to-next-to-leading order and beyond
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).
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0550-3213(99)00778-6 http://cds.cern.ch/record/398228 |