How Universal is the Coupling in the Sigma Model?
High Energy Physics - Phenomenology
2008-11-26 v1 Nuclear Theory
Abstract
We calculate pion-pion scattering lengths and sigma, rho and a1 decay widths from a gauged linear sigma model with two flavours and its globally invariant generalisation.
Cite
@article{arxiv.0804.3949,
title = {How Universal is the Coupling in the Sigma Model?},
author = {Denis Parganlija and Francesco Giacosa and Dirk H. Rischke},
journal= {arXiv preprint arXiv:0804.3949},
year = {2008}
}
Comments
Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 5 pages, 1 figure