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Precision Tests of Flavor and CP violation in B Decays

Michael Gronau
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Abstract

Isospin and flavor SU(3) set stringent bounds on penguin pollution in $B^0(t)\to ρ^+ρ^-$, providing a theoretically precise determination of $α\equiv ϕ_2 $, $α= (91\pm 7_{\rm exp}\pm 3_{\rm th})^\circ$. Isospin breaking in a sum rule for $B\to Kπ$ rates is shown to be suppressed. A similar sum rule holds for CP asymmetries in $B\to Kπ$. Violation of these sum rules would be evidence for an anomalous $ΔI=1$ piece in ${\cal H}_{\rm eff}$.

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Michael Gronau. 2006-08-04. Precision Tests of Flavor and CP violation in B Decays. https://doi.org/10.1016/j.nuclphysbps.2006.09.011

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