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First observation of the decay Bˉs0→D0K∗0\bar{B}^0_s \to D^0 K^{*0} and a measurement of the ratio of branching fractions B(Bˉs0→D0K∗0)B(Bˉ0→D0ρ0)\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)}

Collaboration
Oct, 2011
8 pages
Published in:
  • Phys.Lett.B 706 (2011) 32-39
  • Published: Jul 16, 2013
e-Print:
DOI:
Report number:
  • LHCB-PAPER-2011-008,
  • CERN-PH-EP-2011-150
Experiments:
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Abstract:
The first observation of the decay Bˉs0→D0K∗0\bar{B}^0_s \to D^0 K^{*0} using pppp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb−1^{-1}, is reported. A signal of 34.4±6.834.4 \pm 6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The Bˉs0→D0K∗0\bar{B}^0_s \to D^0 K^{*0} branching fraction is measured relative to that of Bˉ0→D0ρ0\bar{B}^0 \to D^0 \rho^0: B(Bˉs0→D0K∗0)B(Bˉ0→D0ρ0)=1.48±0.34±0.15±0.12\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)} = 1.48 \pm 0.34 \pm 0.15 \pm 0.12, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B0B^0 and Bs0B^0_s hadronisation fractions.
  • p p: interaction
  • anti-B/s0: hadronic decay
  • anti-B0: hadronic decay
  • D0: hadronic decay
  • anti-B/s0: branching ratio: measured
  • anti-B0: branching ratio
  • branching ratio: ratio: measured
  • LHC-B
  • experimental results
  • CERN LHC Coll