Precision Tests of Flavor and CP violation in B Decays

Details Precision Tests of Flavor and CP violation in B Decays Precision Tests of Flavor and CP violation in B Decays

2006-07-25

arxiv.org/abs/hep-ph/0607282v2

Nucl.Phys.Proc.Suppl.163:16-22,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Reference added; Invited talk presented at the First Workshop on Theory, Phenomenology and Experiments in Heavy Flavor Physics

Scientific paper

10.1016/j.nuclphysbps.2006.09.01

Isospin and flavor SU(3) set stringent bounds on penguin pollution in $B^0(t)\to \rho^+\rho^-$, providing a theoretically precise determination of $\alpha\equiv \phi_2 $, $\alpha = (91\pm 7_{\rm exp}\pm 3_{\rm th})^\circ$. Isospin breaking in a sum rule for $B\to K\pi$ rates is shown to be suppressed. A similar sum rule holds for CP asymmetries in $B\to K\pi$. Violation of these sum rules would be evidence for an anomalous $\Delta I=1$ piece in ${\cal H}_{\rm eff}$.

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