The double-soft integral for an arbitrary angle between hard radiators
High Energy Physics - Phenomenology
2018-09-26 v1
Abstract
We consider the double-soft limit of a generic QCD process involving massless partons and integrate analytically the double-soft eikonal functions over the phase-space of soft partons (gluons or quarks) allowing for an arbitrary relative angle between the three-momenta of two hard massless radiators. This result provides one of the missing ingredients for a fully analytic formulation of the nested soft-collinear subtraction scheme recently proposed by some of us.
Cite
@article{arxiv.1807.05835,
title = {The double-soft integral for an arbitrary angle between hard radiators},
author = {Fabrizio Caola and Maximilian Delto and Hjalte Frellesvig and Kirill Melnikov},
journal= {arXiv preprint arXiv:1807.05835},
year = {2018}
}
Comments
24 pages, 1 appendix