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

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

2006-08-04

arxiv.org/abs/hep-ph/0608040v2

Phys.Rev.D74:057503,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, no figures, to be submitted to Phys. Rev. D (Brief Reports). Remark and references added

Scientific paper

10.1103/PhysRevD.74.057503

The observed violation of $A_{CP}(B^0 \to K^+ \pi^-) = A_{CP}(B^+ \to K^+ \pi^0)$ 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 $B\to K\pi$ CP asymmetries should hold. The current experimental status of these sum rules and of a sum rule for $B\to K\pi$ decay rates is presented.

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