arXiv:hep-ph/0503063·v1·High Energy Physics — Phenomenology
Multi-Gluon Collinear Limits from MHV diagrams
T.G. Birthwright🇬🇧 · E.W.N. Glover🇬🇧 · V.V. Khoze🇬🇧 · P. Marquard (Durham U., IPPP)🇬🇧
Abstract
We consider the multi-collinear limit of multi-gluon QCD amplitudes at tree level. We use the MHV rules for constructing colour ordered tree amplitudes and the general collinear factorization formula to derive timelike splitting functions that are valid for specific numbers of negative helicity gluons and an arbitrary number of positive helicity gluons (or vice versa). As an example we present new results describing the collinear limits of up to six gluons.
Comments: 28 pages, six figures, JHEP3 class