2002/12/31 by P. Krokovny, K. Abe, T. Abe +96 · 1 citation
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.90.141802
published as Phys.Rev.Lett.90:141802,2003 · submitted to Phys. Rev. Lett
arxiv created 2003/01/03 · openalex publication_date 2003/04/09 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report on a search for B0\ensuremath→D(*)0K(*)0 decays based on 85\ifmmode×\else\texttimes\fi106 BB events collected with the Belle detector at KEKB. The B0\ensuremath→D0K0 and B0\ensuremath→D0K*0 decays have been observed for the first time with the branching fractions B(B0\ensuremath→D0K0)=(5.0_\ensuremath-1.2+1.3\ifmmode±\else\textpm\fi0.6)\ifmmode×\else\texttimes\fi10^\ensuremath-5 and B(B0\ensuremath→D0K*0)=(4.8_\ensuremath-1.0+1.1\ifmmode±\else\textpm\fi0.5)\ifmmode×\else\texttimes\fi10^\ensuremath-5. No significant signal has been found for the B0\ensuremath→D*0K(*)0 and B0\ensuremath→D(*)0K*0 decay modes, and upper limits at 90% C.L. are presented.