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Observation of the decay B0s→D [bar] 0K+K-

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The first observation of the B0s→¯D0K+K− decay is reported, together with the most precise branching fraction measurement of the mode B0→¯D0K+K−. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb−1. The data were collected with the LHC...

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Main Authors: Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , De Cian, Michel (Author) , Comerma-Montells, Albert (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) , Grabowski, Jascha (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 31 October 2018
In: Physical review
Year: 2018, Volume: 98, Issue: 7
ISSN:2470-0029
DOI:10.1103/PhysRevD.98.072006
Online Access:Verlag, Volltext: https://doi.org/10.1103/PhysRevD.98.072006
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.98.072006
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Author Notes:R. Aaij et al.* (LHCb Collaboration)
Description
Summary:The first observation of the B0s→¯D0K+K− decay is reported, together with the most precise branching fraction measurement of the mode B0→¯D0K+K−. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb−1. The data were collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction of the B0→¯D0K+K− decay is measured relative to that of the decay B0→¯D0π+π− to be B(B0→¯D0K+K−)B(B0→¯D0π+π−)=(6.9±0.4±0.3)%, where the first uncertainty is statistical and the second is systematic. The measured branching fraction of the B0s→¯D0K+K− decay mode relative to that of the corresponding B0 decay is B(B0s→¯D0K+K−)B(B0→¯D0K+K−)=(93.0±8.9±6.9)%. Using the known branching fraction of B0→¯D0π+π−, the values of B(B0→¯D0K+K−)=(6.1±0.4±0.3±0.3)×10−5 and B(B0s→¯D0K+K−)=(5.7±0.5±0.4±0.5)×10−5 are obtained, where the third uncertainties arise from the branching fraction of the decay modes B0→¯D0π+π− and B0→¯D0K+K−, respectively.
Item Description:R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, M. De Cian, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, A. Piucci, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, A. Zhelezov [und weitere] (LHCb Collaboration)
Gesehen am 23.04.2019
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.98.072006

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