2003/12/20 by B. Aubert, BABAR Collaboration, R. Barate +98 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.92.201802
published as Phys.Rev.Lett.92:201802,2004 · submitted to Phys. Rev. Lett
arxiv created 2003/12/20 · openalex publication_date 2004/05/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K0. The results are based on a data sample of approximately 88\ifmmode×\else\texttimes\fi106 \ensuremathΥ(4S)\ensuremath→BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+\ensuremath→K0\ensuremathπ+)=(22.3\ifmmode±\else\textpm\fi1.7\ifmmode±\else\textpm\fi1.1)\ifmmode×\else\texttimes\fi10^\ensuremath-6, B(B0\ensuremath→K0\ensuremathπ0)=(11.4\ifmmode±\else\textpm\fi1.7\ifmmode±\else\textpm\fi0.8)\ifmmode×\else\texttimes\fi10^\ensuremath-6, B(B+\ensuremath→K0K+)<2.5\ifmmode×\else\texttimes\fi10^\ensuremath-6, and B(B0\ensuremath→K0K0)<1.8\ifmmode×\else\texttimes\fi10^\ensuremath-6, where the first uncertainty is statistical and the second is systematic, and the upper limits are at the 90% confidence level. In addition, the following CP-violating asymmetries have been measured: ACP(B+\ensuremath→K0\ensuremathπ+)=\ensuremath-0.05\ifmmode±\else\textpm\fi0.08\ifmmode±\else\textpm\fi0.01 and ACP(B0\ensuremath→K0\ensuremathπ0)=0.03\ifmmode±\else\textpm\fi0.36\ifmmode±\else\textpm\fi0.11.