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

Abstract

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

18 pages, LaTeX, CPT-92/P.2795

References in corpus (1)

• The Chiral Anomaly in Non-Leptonic Weak Interactions

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