Solving multi-loop Feynman diagrams using light-front coordinates
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
We determine the numerical values of scalar multi-loop two-vertex Feynman diagrams, the generalized sunset diagrams, by integrating all but the longitudinal momenta analytically. For the longitudinal momenta we introduce one collective coordinate, which allows us to determine the numerical value of the diagram efficiently and to an arbitrary accuracy. The imaginary part and the threshold behavior of the diagram are also handled within this framework.
Cite
@article{arxiv.hep-ph/9911411,
title = {Solving multi-loop Feynman diagrams using light-front coordinates},
author = {N. E. Ligterink},
journal= {arXiv preprint arXiv:hep-ph/9911411},
year = {2009}
}
Comments
7 pages, 3 figures