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First observation of the B+ → D+s⁢D-s⁢K+ decay

The 𝐵+ →𝐷+𝑠⁢𝐷−𝑠⁢𝐾+ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. Its branching fraction relative to that of the 𝐵+ →𝐷+⁢𝐷−⁢𝐾+ decay is measured...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Marks, Jörg (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: August 2023
In: Physical review
Year: 2023, Volume: 108, Issue: 3, Pages: 034012-1-034012-14
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.034012
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.108.034012
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.034012
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Author Notes:R. Aaij et al.* (LHCb Collaboration)
Description
Summary:The 𝐵+ →𝐷+𝑠⁢𝐷−𝑠⁢𝐾+ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. Its branching fraction relative to that of the 𝐵+ →𝐷+⁢𝐷−⁢𝐾+ decay is measured to be ℬ⁡(𝐵+→𝐷+𝑠⁢𝐷−𝑠⁢𝐾+)ℬ⁡(𝐵+→𝐷+⁢𝐷−⁢𝐾+) =0.525 ±0.033 ±0.027 ±0.034, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the 𝐷±𝑠 →𝐾∓⁢𝐾±⁢𝜋± and 𝐷± →𝐾∓⁢𝜋±⁢𝜋± decays. This measurement fills an experimental gap in the knowledge of the family of Cabibbo-favored ¯𝑏 →¯𝑐⁢𝑐⁢¯𝑠 transitions and opens the path for unique studies of spectroscopy in future.
Item Description:*LHCb Collaboration: R. Aaij, S. Bachmann, M. Borsato, R. Caspary, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, B. Leverington, P. Li, J. Marks, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und 1047 weitere Personen]
Im Titel sind die Plus- und Minuszeichen hochgestellt sowie "s" jeweils tiefgestellt
Veröffentlicht: 14. August 2023
Gesehen am 12.05.2025
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.034012

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