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$K \to ππγ$ decays: a search for novel couplings in kaon decays

Giancarlo D'Ambrosio·Gino Isidori
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Abstract

We analyze $K \to ππγ$ decays in the framework of Chiral Perturbation Theory. We study the different Dalitz plot distributions, trying to find regions where o($p^6$) contributions could be more easily detected. To fulfill this program we compute all the the o($p^4$) loop and counterterm contributions, finding a substantial agreement with the existing calculations and adding some small missing terms in $K_S \to ππγ$.

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Giancarlo D'Ambrosio, Gino Isidori. 1994-08-03. $K \to ππγ$ decays: a search for novel couplings in kaon decays. https://doi.org/10.1007/bf01578672

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