Author:
Del Duca Vittorio,Duhr Claude,Haindl Rayan,Lazopoulos Achilleas,Michel Martin
Abstract
Abstract
We compute in conventional dimensional regularisation the tree-level splitting amplitudes for a gluon parent which splits into four collinear partons. This is part of the universal infrared behaviour of the QCD scattering amplitudes at next-to-next-to-next-to-leading order (N3LO) in the strong coupling constant. Combined with our earlier results for a quark parent, this completes the set of tree-level splitting amplitudes required at this order. We also study iterated collinear limits where a subset of the four collinear partons become themselves collinear.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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