Numerical Evaluation of One-Loop Diagrams Near Exceptional Momentum Configurations
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
One problem which plagues the numerical evaluation of one-loop Feynman diagrams using recursive integration by part relations is a numerical instability near exceptional momentum configurations. In this contribution we will discuss a generic solution to this problem. As an example we consider the case of forward light-by-light scattering.
Keywords
Cite
@article{arxiv.hep-ph/0407016,
title = {Numerical Evaluation of One-Loop Diagrams Near Exceptional Momentum Configurations},
author = {W. Giele and E. W. N. Glover and G. Zanderighi},
journal= {arXiv preprint arXiv:hep-ph/0407016},
year = {2009}
}
Comments
5 pages, 5 figures, Talk given at the 7th DESY Workshop on Elementary Particle Theory, Loops and Legs in Quantum Field Theory, Zinnowitz 2004