Abstract
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.
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Badger, S., Buciuni, F. & Peraro, T. One-loop triple collinear splitting amplitudes in QCD. J. High Energ. Phys. 2015, 188 (2015). https://doi.org/10.1007/JHEP09(2015)188
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DOI: https://doi.org/10.1007/JHEP09(2015)188