The two-fermion vector potential of constraint theory from Feynman diagrams
High Energy Physics - Phenomenology
2009-10-28 v1 Nuclear Theory
Abstract
The relativistic fermion-antifermion bound state vector potential of constraint theory is calculated, in perturbation theory, by means of the Lippmann-Schwinger type equation that relates it to the scattering amplitude. Leading contributions of n-photon exchange diagrams are calculated in an approximation scheme that adapts eikonal approximation to the bound state problem. They produce terms proportional, in three-dimensional x-space, to . The series of leading contributions is summed.
Keywords
Cite
@article{arxiv.hep-ph/9510302,
title = {The two-fermion vector potential of constraint theory from Feynman diagrams},
author = {H. Jallouli and H. Sazdjian},
journal= {arXiv preprint arXiv:hep-ph/9510302},
year = {2009}
}
Comments
13 pages, Latex, with three figures included at the end of the article in a Latex file calling the FEYNMAN macropackage