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First observations of B[bar]0s → D+D−, D+sD− and D0D[bar]0 decays

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First observations and measurements of the branching fractions of the B̄0s→D+D−, B̄0s→D+sD− and B̄0s→D0D̄0 decays are presented using 1.0 fb−1 of data collected by the LHCb experiment. These branching fractions are normalized to those of B̄0→D+D−, B0→D−D+s and B−→D0D−s, respectively. An excess of ev...

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Main Authors: Aaij, Roel (Author) , Aquines Gutiérrez, Osvaldo (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Britsch, Markward (Author) , Di Canto, Angelo (Author) , Dordei, Francesca (Author) , Färber, Christian (Author) , Fontana, Marianna (Author) , Gersabeck, Evelina (Author) , Grünberg, Oliver (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Thomas (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Popov, Dmitry (Author) , Schmelling, Michael (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Volyanskyy, D. (Author) , Voß, Christian (Author) , Voss, H. (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zavertyaev, M. (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 21 May 2021
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2013, Volume: 87, Issue: 9, Pages: 1-12
ISSN:1550-2368
DOI:10.1103/PhysRevD.87.092007
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.87.092007
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.87.092007
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:First observations and measurements of the branching fractions of the B̄0s→D+D−, B̄0s→D+sD− and B̄0s→D0D̄0 decays are presented using 1.0 fb−1 of data collected by the LHCb experiment. These branching fractions are normalized to those of B̄0→D+D−, B0→D−D+s and B−→D0D−s, respectively. An excess of events consistent with the decay B̄0→D0D̄0 is also seen, and its branching fraction is measured relative to that of B−→D0D−s. Improved measurements of the branching fractions B(B̄0s→D+sD−s) and B(B−→D0D−s) are reported, each relative to B(B0→D−D+s). The ratios of branching fractions are B(B̄0s→D+D−)B(B̄0→D+D−)=1.08±0.20±0.10, B(B̄0s→D+sD−)B(B0→D−D+s)=0.050±0.008±0.004, B(B̄0s→D0D̄0)B(B−→D0D−s)=0.019±0.003±0.003, B(B̄0→D0D̄0)B(B−→D0D−s)<0.0024 at 90% CL, B(B̄0s→D+sD−s)B(B0→D−D+s)=0.56±0.03±0.04, B(B−→D0D−s)B(B0→D−D+s)=1.22±0.02±0.07, where the uncertainties are statistical and systematic, respectively.
Item Description:LHCb Collaboration: R. Aaij, O. Aquines Gutierrez, S. Bachmann, A. Bien, J. Blouw, M. Britsch, A. Di Canto, F. Dordei, C. Färber, M. Fontana, E. Gersabeck, O. Grünberg, S. Hansmann-Menzemer, T. Hartmann, A. Jaeger, K. Kreplin, G. Krocker, B. Leverington, C. Linn, J. Marks, M. Meissner, T. Nikodem, D. Popov, M. Schmelling, P. Seyfert, S. Stahl, J. van Tilburg, U. Uwer, D. Volyanskyy, C. Voß, H. Voss, R. Waldi, S. Wandernoth, D. Wiedner, M. Zavertyaev, A. Zhelezov und weitere 585
Gesehen am 20.04.2021
Physical Description:Online Resource
ISSN:1550-2368
DOI:10.1103/PhysRevD.87.092007

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