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Measurement of the branching fractions of the decays Bs -> D0bar K- {\pi}+ and B0 -> D0bar K+ {\pi}-

Abstract : The first observation of the decay Bs -> D0bar K- {\pi}+ is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay B0 -> D0bar {\pi}+ {\pi}- is measured to be BR(Bs -> D0bar K- {\pi}+)/BR(B0 -> D0bar {\pi}+ {\pi}-) = 1.18 +- 0.05 (stat.) +- 0.12 (syst.). In addition, the relative branching fraction of the decay B0 -> D0bar K+ {\pi}- is measured to be BR(B0 -> D0bar K+ {\pi}-)/BR(B0 -> D0bar {\pi}+ {\pi}-) = 0.106 +- 0.007 (stat.) +- 0.008 (syst.).
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http://hal.in2p3.fr/in2p3-00817213
Contributor : Sabine Starita <>
Submitted on : Wednesday, April 24, 2013 - 10:03:53 AM
Last modification on : Wednesday, September 16, 2020 - 4:19:52 PM

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R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Measurement of the branching fractions of the decays Bs -> D0bar K- {\pi}+ and B0 -> D0bar K+ {\pi}-. Physical Review D, American Physical Society, 2013, 87, pp.112009. ⟨10.1103/PhysRevD.87.112009⟩. ⟨in2p3-00817213⟩

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