A measurement of ∆Γs
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13130_2024_Article_23528.pdf
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellan Beteta, C.
Abudinén, F.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Afsharnia, H.
Agapopoulou, C.
Date Issued
May 22, 2024
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
The LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. A measurement of ∆Γs. J. High Energ. Phys. 2024, 253 (2024).
Version
Final published version
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 𝐵0𝑠→𝐽/𝜓𝜂′ and 𝐵0𝑠→𝐽/𝜓𝜋+𝜋− are studied. The decay-width difference between the light and heavy mass eigenstates of the 𝐵0𝑠 meson is measured to be ∆Γs = 0.087 ± 0.012 ± 0.009 ps−1, where the first uncertainty is statistical and the second systematic.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1007/jhep05(2024)253
