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Observation of the B0→D[bar]*0K+π− and B0s→D[bar]*0K−π+ decays

The first observations of B0→¯D∗(2007)0K+π− and B0s→¯D∗(2007)0K−π+ decays are presented, and their branching fractions relative to that of the B0→¯D∗(2007)0π+π− decay are reported. These modes can potentially be used to investigate the spectroscopy of charm and charm-strange resonances and to determ...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 20 April 2022
In: Physical review
Year: 2022, Volume: 105, Issue: 7, Pages: 1-22
ISSN:2470-0029
DOI:10.1103/PhysRevD.105.072005
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.105.072005
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.105.072005
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:The first observations of B0→¯D∗(2007)0K+π− and B0s→¯D∗(2007)0K−π+ decays are presented, and their branching fractions relative to that of the B0→¯D∗(2007)0π+π− decay are reported. These modes can potentially be used to investigate the spectroscopy of charm and charm-strange resonances and to determine the angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle. It is also important to understand them as a source of potential background in determinations of γ from B+→DK+ and B0→DK+π− decays. The analysis is based on a sample corresponding to an integrated luminosity of 5.4 fb−1 of proton-proton collision data at 13 TeV center-of-mass energy recorded with the LHCb detector. The ¯D∗(2007)0 mesons are fully reconstructed in the ¯D0π0 and ¯D0γ channels with the ¯D0→K+π− decay. A novel weighting method is used to subtract background while simultaneously applying an event-by-event efficiency correction to account for resonant structures in the decays.
Item Description:LHCb Collaboration: R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, D. Gerick, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kepcna, B. Leverington, P. Li, H. Malygina, J. Marks, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und 979 weitere Personen]
Gesehen am 21.07.2022
Im Titel steht der Buchstabe "D" mit einem Oberstrich
Im Titel sind die Zahl 0 und die Zeichen *, + und - hochgestellt
Im Titel ist der Buchstabe "s" tiefgestellt
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.105.072005

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