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Article
Report number arXiv:2308.08512 ; LHCb-PAPER-2023-011 ; CERN-EP-2023-155
Title Observation of Cabibbo-suppressed two-body hadronic decays and precision mass measurement of the Ωc0 baryon
Author(s) LHCb Collaboration  Показване на всичките 1106 автора
Corporate Author(s) LHCb Collaboration
Publication 2024-02-23
Imprint 17 Aug 2023
Number of pages 18
Note All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2023-011.html (LHCb public pages)
In: Phys. Rev. Lett. 132 (2024) 081802
DOI 10.1103/PhysRevLett.132.081802 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; charm physics ; branching fraction
Abstract The first observation of the singly Cabibbo-suppressed Ωc0ΩK+ and Ωc0Ξπ+ decays is reported, using proton-proton collision data at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb1, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be B(Ωc0ΩK+)B(Ωc0Ωπ+)=[6.08±0.51(stat)±0.40(syst)]%, B(Ωc0Ξπ+)B(Ωc0Ωπ+)=[15.81±0.87(stat)±0.44(syst)±0.16(ext)]%. In addition, using the Ωc0Ωπ+ decay channel, the Ωc0 baryon mass is measured to be M(Ωc0)=2695.28±0.07(stat)±0.27(syst)±0.30(ext)MeV/c2, improving the precision of the previous world average by a factor of 4.
Copyright/License Publication: © 2024-2025 CERN (License: CC BY 4.0), sponsored by SCOAP³
Preprint: © 2023-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: lhcb.secretariat@cern.ch


 Записът е създаден на 2023-08-17, последна промяна на 2024-10-18


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