2003/11/13 by B. Aubert, BABAR Collaboration, R. Barate +98 · 1 citation
Physics and Astronomy · #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.92.202002
published as Phys.Rev.Lett.92:202002,2004 · 7 pages, 1 figure; submitted to Phys. Rev. Lett
arxiv created 2003/11/13 · 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 a study of B^\ensuremath-\ensuremath→DCP0K^\ensuremath- decays, where DCP0 is reconstructed in CP-even channels, based on a sample of 88.8\ifmmode×\else\texttimes\fi106 \ensuremathΥ(4S)\ensuremath→BB decays collected with the BABAR detector at the PEP-II e+e^\ensuremath- storage ring. We measure the ratio of Cabibbo-suppressed to Cabibbo-favored branching fractions B(B^\ensuremath-\ensuremath→DCP0K^\ensuremath-)/B(B^\ensuremath-\ensuremath→DCP0\ensuremathπ^\ensuremath-)=[8.8\ifmmode±\else\textpm\fi1.6(stat)\ifmmode±\else\textpm\fi0.5(syst)]\ifmmode×\else\texttimes\fi10^\ensuremath-2 and the CP asymmetry ACP=0.07\ifmmode±\else\textpm\fi0.17(stat)\ifmmode±\else\textpm\fi0.06(syst). We also measure B(B^\ensuremath-\ensuremath→D0K^\ensuremath-)/B(B^\ensuremath-\ensuremath→D0\ensuremathπ^\ensuremath-)=[8.31\ifmmode±\else\textpm\fi0.35(stat)\ifmmode±\else\textpm\fi0.20(syst)]\ifmmode×\else\texttimes\fi10^\ensuremath-2 using a sample of 61.0\ifmmode×\else\texttimes\fi106 BB pairs.