K 0 --> pi 0 gammagamma decays in chiral perturbation theory
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K 0 --> pi 0 gammagamma decays in chiral perturbation theory

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K 0 --> pi 0 gammagamma decays in chiral perturbation theory

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Ecker, Gerhard; Pich Zardoya, Antonio Perfil; Rafael, Eduardo de
This document is a artículoDate1987

Este documento está disponible también en : http://hdl.handle.net/10550/39691
The decays K L,S --> pi 0gammagamma are calculated within the framework of chiral perturbation theory. The amplitude for K L --> pi 0gammagamma is found to be finite at the one-loop level yielding a branching ratio of 6.8 × 10 -7. The decay spectra of both decays are very characteristic and provide good tests of the effective chiral symmetry realization of the standard model.

    Ecker, Gerhard Pich Zardoya, Antonio Rafael, Eduardo de 1987 K 0 --> pi 0 gammagamma decays in chiral perturbation theory Physics Letters B 189 3 363 368
http://dx.doi.org/10.1016/0370-2693(87)91448-1

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