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Observation of cabibbo-suppressed two-body hadronic decays and precision mass measurement of the Ω0c baryon

The first observation of the singly Cabibbo-suppressed Ω0𝑐→Ω−⁢𝐾+ and Ω0𝑐→Ξ−⁢𝜋+ decays is reported, using proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1, collected with the LHCb detector between 2016 and 2018. The branching fra...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Borsato, Martino (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Pais, Preema (Author) , Tuci, Giulia (Author) , Unverzagt, Daniel Joachim (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Other Authors: Uwer, Ulrich (Other)
Format: Article (Journal)
Language:English
Published: 23 February 2024
In: Physical review letters
Year: 2024, Volume: 132, Issue: 8, Pages: 1-11
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.081802
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.132.081802
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.132.081802
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:The first observation of the singly Cabibbo-suppressed Ω0𝑐→Ω−⁢𝐾+ and Ω0𝑐→Ξ−⁢𝜋+ decays is reported, using proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be ℬ⁡(Ω0𝑐→Ω−⁢𝐾+)ℬ⁡(Ω0𝑐→Ω−⁢𝜋+)=[6.08±0.51⁢(stat)±0.40⁢(syst)]%,ℬ⁡(Ω0𝑐→Ξ−⁢𝜋+)ℬ⁡(Ω0𝑐→Ω−⁢𝜋+)=[15.81±0.87⁢(stat)±0.44⁢(syst)±0.16⁢(ext)]%. In addition, using the Ω0𝑐→Ω−⁢𝜋+ decay channel, the Ω0𝑐 baryon mass is measured to be 𝑀⁡(Ω0𝑐)=2695.28±0.07⁢(stat)±0.27⁢(syst)±0.30⁢(ext) MeV, improving the precision of the previous world average by a factor of 4.
Item Description:Im Text ist "0" hochgestellt, "c" tiefgestellt
LHCb Collaboration: R. Aaij, S. Bachmann, M. Borsato, L. Carus, R. Caspary, C. Cocha Toapaxi, M. De Cian, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, G. Tuci, D.J. Unverzagt, U. Ulrich, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und viele weitere]
Gesehen am 11.10.2024
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.081802

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