Radiative Kaon Decays and the Penguin Contribution to the Delta I = 1/2 Rule
arXiv:hep-ph/0508189 · doi:10.1016/j.nuclphysb.2005.09.040
Abstract
A consistent census of penguins in the Delta I = 1/2 rule is taken from the eta0 pole contribution to the radiative KL to gamma gamma, KS to pi0 gamma gamma and K+ to pi+ gamma gamma decay modes. We briefly comment on its impact for KL to pi0 pi0 gamma gamma, KL to pi+ pi- gamma and check its compatibility with the KL - KS mass difference and the CP violating epsilon-prime / epsilon parameter.
37 pages, 16 figures