Two loops calculation in chiral perturbation theory and the unitarization program of current algebra
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
In this paper we compare two loop Chiral Perturbation Theory (ChPT) calculation of pion-pion scattering with the unitarity second order correction to the current algebra soft-pion theorem. It is shown that both methods lead to the same analytic structure for the scattering amplitude.
Keywords
Cite
@article{arxiv.hep-ph/9707394,
title = {Two loops calculation in chiral perturbation theory and the unitarization program of current algebra},
author = {J. Sá Borges and J. Soares Barbosa and M. D. Tonasse},
journal= {arXiv preprint arXiv:hep-ph/9707394},
year = {2009}
}
Comments
13 pages, Revtex 3.0, no figures, submitted to Phys. Lett. B