Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
The process eta -> pi0 pi0 gamma gamma is discussed in Chiral Perturbation Theory (ChPT) extending two recent analyses. Special attention is devoted to one-loop corrections, eta-eta' mixing effects and vector-meson dominance of ChPT counter-terms. The less interesting eta -> pi^+ pi^- gamma gamma transition is briefly discussed too.
Keywords
Cite
@article{arxiv.hep-ph/9702302,
title = {Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays},
author = {Ll. Ametller and J. Bijnens and A. Bramon and P. Talavera},
journal= {arXiv preprint arXiv:hep-ph/9702302},
year = {2009}
}
Comments
15 pages, 3 Postscript figures, uses epsfig.sty