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A measurement of ∆Γs

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. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., et al. (2024). A measurement of ∆Γs. Journal of High Energy Physics, 2024(5): 253. doi:10.1007/JHEP05(2024)253.


Cite as: https://hdl.handle.net/21.11116/0000-000F-5F4A-5
Abstract
Using a dataset corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018 in proton-proton collisions, the decay-time distributions of the decay modes Bs0 → J/ψη′ and Bs0 → J/ψπ+π are studied. The decay-width difference between the light and heavy mass eigenstates of the Bs0 meson is measured to be ∆Γs = 0.087 ± 0.012 ± 0.009 ps−1, where the first uncertainty is statistical and the second systematic.