Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays
Ametller, Ll. · Bijnens, J. · Bramon, A. · Talavera, P.
Original · EN
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.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.