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arXiv · hep-ph/9209231

Rare Kaon Decays in the $1/N_c$-Expansion

C. Bruno·J. Prades
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Abstract

We study the unknown coupling constants that appear at order $p^4$ in the Chiral Perturbation Theory analysis of $K \to πγ^* \to πl^+ l^-$, $K^{+-} \to π^{+-} γγ$ and $K \to ππγ$ decays. To that end, we compute the chiral realization of the $ΔS \, = \, 1$ Hamiltonian in the framework of the $1/N_c$-expansion of the low-energy action. The phenomenological implications are also discussed.

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C. Bruno, J. Prades. 1992-09-14. Rare Kaon Decays in the $1/N_c$-Expansion. https://doi.org/10.1007/bf01561477

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