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Measurement of the branching fractions for the exclusive decays of B0B^0 and B+B^+ to Dˉ(∗)D(∗)K\bar{D}^{(*)} D^{(*)} K

Collaboration
May, 2003
18 pages
Published in:
  • Phys.Rev.D 68 (2003) 092001
e-Print:
DOI:
Report number:
  • SLAC-PUB-9736,
  • BABAR-PUB-03-010
Experiments:
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Abstract:
We report the observation of 823+/-57 B^0 and 970+/-65 B^+ decays to doubly charmed final states Dbar^(*)D^(*)K, where Dbar^(*) and D^(*) are fully reconstructed and K is either a K+/- or a K^0. We use a sample of 82.3+/- 0.9 million BBbar events collected between 1999 and 2002 with the babar detector at the PEP-II storage ring at the Stanford Linear Accelerator Center. The 22 possible B decays to Dbar^(*)D^(*)K are reconstructed exclusively and the corresponding branching fractions or limits are determined. The branching fractions of the B^0 and of the B^+ to Dbar^(*)D^(*)KarefoundtobeBR(B0−−>Dbar(∗)D(∗)K)=(4.3+/−0.3stat+/−0.6syst) are found to be BR(B^0 --> Dbar^(*) D^(*) K) = (4.3 +/- 0.3 stat +/- 0.6 syst)%, BR(B^+ --> Dbar^(*) D^(*) K) = (3.5 +/- 0.3 stat +/- 0.5 syst)%. A search for decays to orbitally excited D_s$ states, B --> Dbar^(*) D_{sJ}^{+} (D_{sJ}^{+} --> D^(*)0K^+) is also performed.
Note:
  • 18 pages, 7 postscript figures, 5 tables, submitted to Phys.Rev.D
  • 12.15.Hh
  • 13.25.Hw
  • 11.30.Er
  • electron positron: colliding beams
  • electron positron: annihilation
  • Upsilon(10570): electroproduction
  • B: pair production
  • B: hadronic decay
  • charmed meson: pair production
  • D*(2010)