Tracking down penguins at the poles

GĂ©rard, Jean-Marc;Smith, Christopher;Trine, Stephanie

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(en) QCD penguins are responsible for about 2/3 of the Delta I=1/2 rule in K to pi pi decays, as inferred from a combined analysis of K to pi pi and KL to gamma gamma. Further tests based on the decays KS to pi0 gamma gamma and K+ to pi+ gamma gamma are proposed. New insights into the treatment of pi0, eta, eta' pole amplitudes are also reported. Comment: 6 pages, 4 figures. Talk given at the 41th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 11-18 Mar 2006
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Tracking down penguins at the poles. (n.d.). https://hdl.handle.net/2078.5/256863