Recursion Relations for Tree-level Amplitudes in the SU(N) Non-linear Sigma Model
High Energy Physics - Theory
2013-04-10 v1 High Energy Physics - Phenomenology
Abstract
It is well-known that the standard BCFW construction cannot be used for on-shell amplitudes in effective field theories due to bad behavior for large shifts. We show how to solve this problem in the case of the SU(N) non-linear sigma model, i.e. non-renormalizable model with infinite number of interaction vertices, using scaling properties of the semi-on-shell currents, and we present new on-shell recursion relations for all on-shell tree-level amplitudes in this theory.
Keywords
Cite
@article{arxiv.1212.5224,
title = {Recursion Relations for Tree-level Amplitudes in the SU(N) Non-linear Sigma Model},
author = {Karol Kampf and Jiri Novotny and Jaroslav Trnka},
journal= {arXiv preprint arXiv:1212.5224},
year = {2013}
}
Comments
4 pages, 2 figures