2008/04/24 by CDF Collaboration, J. Adelman, T. Aaltonen +98 · 25 citations
Physics and Astronomy · #Branching fraction #Combinatorics #Crystallography #High-Energy Particle Collisions Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevd.79.011104
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 79(1) (American Physical Society) · Submitted to Phys. Rev. D
arxiv created 2008/04/24 · openalex publication_date 2009/01/22 · arxiv updated 2010/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We search for b\ensuremath→s\ensuremathμ+\ensuremathμ^\ensuremath- transitions in B meson (B+, B0, or Bs0) decays with 924 pb^\ensuremath-1 of pp collisions at √(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We find excesses with significances of 4.5, 2.9, and 2.4 standard deviations in the B+\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-K+, B0\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-K*(892)0, and Bs0\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-\ensuremathφ decay modes, respectively. Using B\ensuremath→J/\ensuremathψh (h=K+, K*(892)0, \ensuremathφ) decays as normalization channels, we report branching fractions for the previously observed B+ and B0 decays, B(B+\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-K+)=(0.59\ifmmode±\else\textpm\fi0.15\ifmmode±\else\textpm\fi0.04)\ifmmode×\else\texttimes\fi10^\ensuremath-6, and B(B0\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-K*(892)0)=(0.81\ifmmode±\else\textpm\fi0.30\ifmmode±\else\textpm\fi0.10)\ifmmode×\else\texttimes\fi10^\ensuremath-6, where the first uncertainty is statistical, and the second is systematic. We set an upper limit on the relative branching fraction B(Bs0\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath-\ensuremathφ)/B(Bs0\ensuremath→J/\ensuremathψ\ensuremathφ)<2.6(2.3)\ifmmode×\else\texttimes\fi10^\ensuremath-3 at the 95(90)% confidence level, which is the most stringent to date.