Rate andCP-asymmetry sum rules inB→Kπ

2006/08/16 by Michael Gronau, Jonathan L. Rosner · 4 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.74.057503

published as Phys.Rev.D74:057503,2006 · 4 pages, no figures, to be submitted to Phys. Rev. D (Brief Reports). Remark and references added

arxiv created 2006/08/16 · openalex publication_date 2006/09/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The observed violation of A_CP(B⁰\ensuremath→K⁺\ensuremathπ^\ensuremath-)=A_CP(B⁺\ensuremath→K⁺\ensuremathπ⁰) 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\ensuremath→K\ensuremathπ CP asymmetries should hold. The current experimental status of these sum rules and of a sum rule for B\ensuremath→K\ensuremathπ decay rates is presented.

Cited by

• Exploring New Physics in B → π K Decays
• Exploring B→ π π , π K B → π π , π K decays at the high-precision frontier
• Diagnostic for new physics in B→πK decays
• Measurement ofCPasymmetries inB0→K0π0decays