Measurement of the B s 0 → J / ψK S 0 effective lifetime from proton-proton collisions at s = 13 TeV

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Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; ... Show more
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Abstract
The effective lifetime of the B s 0 meson in the decay B s 0 → J / ψK S 0 is measured using data collected during 2016–2018 with the CMS detector in s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb−1. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B s 0 meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.
Date issued
2024-10-31
URI
https://hdl.handle.net/1721.1/157561
Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The CMS collaboration., Hayrapetyan, A., Tumasyan, A. et al. Measurement of the B0 s → J/ψK0S effective lifetime from proton-proton collisions at √s = 13 TeV. Phys. 2024, 247 (2024).
Version: Final published version
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