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Study of Bc+ meson decays to charmonia plus multihadron final states

MPS-Authors
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Schmelling,  M.       
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Zavertyaev,  M.       
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Citation

LHCb Collaboration, Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinén, F., Ackernley, T., et al. (2023). Study of Bc+ meson decays to charmonia plus multihadron final states. Journal of high energy physics: JHEP, 2023(7): 198. doi:10.1007/JHEP07(2023)198.


Cite as: https://hdl.handle.net/21.11116/0000-000D-F7E5-A
Abstract
Four decay modes of the Bc+ meson into a J/ψ meson and multiple charged kaons or pions are studied using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9 fb−1. The decay Bc+ → J/ψK+Kπ+π+π- is observed for the first time, and evidence for the Bc+ → J/ψ4π+ decay is found. The decayBc+ → J/ψ3π+ is observed and the previous observation of the Bc+ → ψ(2S)π+π+π decay is confirmed using the ψ(2S) → J/ψπ+π decay mode. Ratios of the branching fractions of these four Bc+ decay channels are measured.