Counting tree diagrams: asymptotic results for QCD-like theories
High Energy Physics - Phenomenology
2011-09-13 v2
Abstract
We discuss the enumeration of Feynman diagrams at tree order for processes with external lines of different types. We show how this can be done by iterating algebraic Schwinger-Dyson equations. Asymptotic estimates for very many external lines are derived. Applications include QED, QCD and scalar QED, and the asymptotic estimates are numerically confronted with the exact results.
Cite
@article{arxiv.hep-ph/0110225,
title = {Counting tree diagrams: asymptotic results for QCD-like theories},
author = {P. D. Draggiotis and R. Kleiss},
journal= {arXiv preprint arXiv:hep-ph/0110225},
year = {2011}
}
Comments
16 pages