High-momentum asymptotics from the Fock-Feynman- Schwinger path integral
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
The asymptotics of n-point Green's function at large external momenta is obtained in the exponentiated form using the Fock-Feynman-Schwinger representation for propagators in the external field. The method is applied to gauge theories such as QCD and QED, and the Sudakov form-factor is calculated as an example in QED and meson form-factor in QCD. Nonperturbative contributions can be conveniently included, as it is demonstrated in the example of the confinement correction to the form-factor.
Keywords
Cite
@article{arxiv.hep-ph/9904431,
title = {High-momentum asymptotics from the Fock-Feynman- Schwinger path integral},
author = {Yu. A. Simonov},
journal= {arXiv preprint arXiv:hep-ph/9904431},
year = {2009}
}
Comments
LaTeX, 15 pages, 3 figures