TPEcalc: a program for calculation of two-photon exchange amplitudes
High Energy Physics - Phenomenology
2015-06-04 v2 Nuclear Theory
Abstract
TPEcalc is a C++ program for calculation of two-photon exchange (TPE) amplitudes in elastic electron-hadron scattering, based on the dispersion method. It is a command-line tool which accepts kinematical parameters (Q^2 and epsilon) as input and returns TPE amplitudes. It can do calculations for proton, neutron and pion targets. Any spin 1/2+ or spin 0- target is supported, if the user supplies all necessary form factor parameterizations. This paper describes how to use TPEcalc and outlines underlying theory. The program source code can be downloaded from http://tpe.bitp.kiev.ua/
Cite
@article{arxiv.1209.2746,
title = {TPEcalc: a program for calculation of two-photon exchange amplitudes},
author = {Dmitry Borisyuk and Alexander Kobushkin},
journal= {arXiv preprint arXiv:1209.2746},
year = {2015}
}
Comments
8 pages, no figures. Update for new version, which supports any spin-1/2 or spin-3/2 intermediate states