eta, eta-prime -> pi^+ pi^- gamma with coupled channels
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
The decays eta, eta-prime -> pi^+ pi^- gamma are investigated within an approach that combines one-loop chiral perturbation theory with a coupled channel Bethe-Salpeter equation which satisfies unitarity constraints and generates vector mesons dynamically from composite states of two pseudoscalar mesons. It is furthermore shown that the inclusion of the eta-prime as a dynamical degree of freedom does not renormalize the Wess-Zumino-Witten term.
Keywords
Cite
@article{arxiv.hep-ph/0405039,
title = {eta, eta-prime -> pi^+ pi^- gamma with coupled channels},
author = {B. Borasoy and R. Nissler},
journal= {arXiv preprint arXiv:hep-ph/0405039},
year = {2009}
}
Comments
21 pages, 11 figures