Multiscalar amplitudes to all orders in perturbation theory
High Energy Physics - Phenomenology
2009-10-22 v2
Abstract
A method for calculating loop amplitudes at the multiboson threshold is presented, based on Feynman-diagram techniques. We explicitly calculate the one-loop amplitudes in both -symmetric and broken symmetry cases, using dimensional regularization. We argue that, to all orders in the perturbation expansion, the unitarity-violating behaviour of the tree-order amplitudes persists.
Keywords
Cite
@article{arxiv.hep-ph/9303321,
title = {Multiscalar amplitudes to all orders in perturbation theory},
author = {E. N. Argyres and Ronald H. P. Kleiss and Costas G. Papadopoulos},
journal= {arXiv preprint arXiv:hep-ph/9303321},
year = {2009}
}
Comments
7 pages, Latex, CERN-TH.6852/93