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Measurement of the relative B−→D0/D[ast]0/D[astast]0[mu]μ−ν[bar][mu] branching fractions using B- mesons from B[bar][ast]0s2 decays

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The decay of the narrow resonance ¯B*0s2→B−K+ can be used to determine the B− momentum in partially reconstructed decays without any assumptions on the decay products of the B− meson. This technique is employed for the first time to distinguish contributions from D0, D*0, and higher-mass charmed sta...

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Main Authors: Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Grabowski, Jascha (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) , Neuner, Max (Author) , Piucci, Alessio (Author) , Skidmore, Nicola (Author) , Stahl, Marian (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 31 May 2019
In: Physical review
Year: 2019, Volume: 99, Issue: 9, Pages: 092009
ISSN:2470-0029
DOI:10.1103/PhysRevD.99.092009
Online Access:Verlag, Volltext: https://doi.org/10.1103/PhysRevD.99.092009
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.99.092009
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:The decay of the narrow resonance ¯B*0s2→B−K+ can be used to determine the B− momentum in partially reconstructed decays without any assumptions on the decay products of the B− meson. This technique is employed for the first time to distinguish contributions from D0, D*0, and higher-mass charmed states (D**0) in semileptonic B− decays by using the missing-mass distribution. The measurement is performed using a data sample corresponding to an integrated luminosity of 3.0 fb−1 collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. The resulting branching fractions relative to the inclusive B−→D0Xμ−¯νμ are fD0=B(B−→D0μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.25±0.06,fD**0=B(B−→(D**0→D0X)μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.21±0.07, with fD*0=1−fD0−fD**0 making up the remainder.
Item Description:Im Titel ist [ast] als Tropfensternchen dargestellt
Im Titel sind [ast] sowie "0" und die Minuszeichen hochgestellt, [my] und s2 tiefgestellt
Im Titel ist [mu] als griechischer Buchstabe dargestellt
LHCb Collaboration, R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, 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, M. Neuner, A. Piucci, N. Skidmore, M. Stahl, U. Uwer, A. Zhelezov [und weitere]
Gesehen am 01.10.2019
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.99.092009

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