QED box amplitude in heavy fermion production
High Energy Physics - Phenomenology
2011-09-13 v1
Abstract
We evaluate the two-photon box contribution to heavy fermion production in electron positron annihilation, that provides O(alpha^2) electromagnetic corrections to the Born cross section. The study of its non-relativistic expansion, relevant at energies close to the threshold of production, is also performed. We also verify that the threshold expansion of the one-loop integrals correctly reproduces our results, thus extending the applicability of this technique to heavy fermion production diagrams.
Cite
@article{arxiv.hep-ph/0206100,
title = {QED box amplitude in heavy fermion production},
author = {J. Portoles and P. D. Ruiz-Femenia},
journal= {arXiv preprint arXiv:hep-ph/0206100},
year = {2011}
}
Comments
18 pages, 2 figures