Separation of soft and collinear singularities from one-loop N-point integrals
High Energy Physics - Phenomenology
2010-04-05 v1
Abstract
The soft and collinear singularities of general scalar and tensor one-loop N-point integrals are worked out explicitly. As a result a simple explicit formula is given that expresses the singular part in terms of 3-point integrals. Apart from predicting the singularities, this result can be used to transfer singular one-loop integrals from one regularization scheme to another or to subtract soft and collinear singularities from one-loop Feynman diagrams directly in momentum space.
Cite
@article{arxiv.hep-ph/0308246,
title = {Separation of soft and collinear singularities from one-loop N-point integrals},
author = {Stefan Dittmaier},
journal= {arXiv preprint arXiv:hep-ph/0308246},
year = {2010}
}
Comments
19 pages latex