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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 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/39691 |
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| 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. | |||
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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 |
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| http://dx.doi.org/10.1016/0370-2693(87)91448-1 |
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