Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays

Details Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays Chiral-loop and vector-meson contributions to eta -> pi pi gamma gamma decays

1997-02-11

arxiv.org/abs/hep-ph/9702302v1

Phys.Lett. B400 (1997) 370-378

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 3 Postscript figures, uses epsfig.sty

Scientific paper

10.1016/S0370-2693(97)00378-X

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.

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