Non-perturbative Approach to effective chiral Lagrangians and Meson Interactions
High Energy Physics - Phenomenology
2008-11-26 v2 Nuclear Theory
Abstract
We develop a coupled channel unitary approach describing the behavior at higher energies of systems whose low-energy dynamics is given by effective O(p^2) and O(p^4) chiral Lagrangians. Our free parameters are those of the O(p^4) Lagrangian. When applied to the meson-meson interaction, it yields a remarkable agreement with data up to sqrt{s}=1.2 GeV, dynamically generating the sigma, f_0, a_0,rho and K^* resonances. Further applications are also proposed.
Keywords
Cite
@article{arxiv.hep-ph/9803242,
title = {Non-perturbative Approach to effective chiral Lagrangians and Meson Interactions},
author = {J. A. Oller and E. Oset and J. R. Pelaez},
journal= {arXiv preprint arXiv:hep-ph/9803242},
year = {2008}
}
Comments
References corrected, to be published in Physical Review Letters