Primary Feynman rules to calculate the epsilon-dimensional integrand of any 1-loop amplitude
High Energy Physics - Phenomenology
2015-06-03 v3 High Energy Physics - Theory
Abstract
When using dimensional regularization/reduction the epsilon-dimensional numerator of the 1-loop Feynman diagrams gives rise to rational contributions. I list the set of fundamental rules that allow the extraction of such terms at the integrand level in any theory containing scalars, vectors and fermions, such as the electroweak standard model, QCD and SUSY.
Cite
@article{arxiv.1111.4965,
title = {Primary Feynman rules to calculate the epsilon-dimensional integrand of any 1-loop amplitude},
author = {R. Pittau},
journal= {arXiv preprint arXiv:1111.4965},
year = {2015}
}
Comments
19 pages, 14 figures, uses axodraw.sty. Version accepted for publication in JHEP