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arXiv · hep-ph/9904431

High-momentum asymptotics from the Fock-Feynman- Schwinger path integral

Yu. A. Simonov
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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.

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Yu. A. Simonov. 1999-04-22. High-momentum asymptotics from the Fock-Feynman- Schwinger path integral. https://doi.org/10.1016/s0370-2693(99)00996-x

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