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arXiv · hep-ph/9510374

The Anomalous Decay eta -> pi pi gamma gamma

G. Knoechlein·S. Scherer·D. Drechsel
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Abstract

We investigate the rare radiative eta decay modes eta -> pi+ pi- gamma gamma and eta -> pi0 pi0 gamma gamma within the framework of chiral lagrangians at o(p^4) and present photon spectra for both processes.

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G. Knoechlein, S. Scherer, D. Drechsel. 1995-10-23. The Anomalous Decay eta -> pi pi gamma gamma. https://doi.org/10.1016/0146-6410(96)00018-x

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