A General Expression for Symmetry Factors of Feynman Diagrams
High Energy Physics - Theory
2009-11-07 v1
Abstract
The calculation of the symmetry factor corresponding to a given Feynman diagram is well known to be a tedious problem. We have derived a simple formula for these symmetry factors. Our formula works for any diagram in scalar theory ( and interactions), spinor QED, scalar QED, or QCD.
Keywords
Cite
@article{arxiv.hep-th/0108088,
title = {A General Expression for Symmetry Factors of Feynman Diagrams},
author = {C. D. Palmer and M. E. Carrington},
journal= {arXiv preprint arXiv:hep-th/0108088},
year = {2009}
}
Comments
RevTex 11 pages with 10 figures