Measurement of the branching fractions of the decays Bs -> D0bar K- π+ and B0 -> D0bar K+ π-

Journal article

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.).

Authors: collaboration, L; Aaij, R; Beteta, C; Adeva, B; Adinolfi, M

• Publication status: Published
• Journal: Phys. Rev. D
• Volume: 87
• Issue: 11
• Pages: 112009
• Publication date: 2013-04-23
• DOI: 10.1103/PhysRevD.87.112009
• EISSN: 1550-2368
• ISSN: 1550-7998
• Language: English
• Keywords: hep-ex