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Rate and CP-asymmetry sum rules in $B \to K π$

Michael Gronau·Jonathan L. Rosner
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Abstract

The observed violation of $A_{CP}(B^0 \to K^+ π^-) = A_{CP}(B^+ \to K^+ π^0)$ has been recently mentioned as a puzzle for the standard model. We point out that while this violation may be accounted for by a large color-suppressed tree amplitude, a sum rule involving three or four $B\to Kπ$ CP asymmetries should hold. The current experimental status of these sum rules and of a sum rule for $B\to Kπ$ decay rates is presented.

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Michael Gronau, Jonathan L. Rosner. 2006-08-16. Rate and CP-asymmetry sum rules in $B \to K π$. https://doi.org/10.1103/physrevd.74.057503

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