Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Bergauer, T;
Dragicevic, M;
Erö, J;
... Da Costa, EM; + view all
(2020)
Observation of the Λ_{b}^{0} → J/ψΛφ decay in proton-proton collisions at \sqrt{s} = 13 TeV.
Physics Letters B
, 802
10.1016/j.physletb.2020.135203.
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Abstract
The observation of the Λ_{b}^{0} → J/ψΛφ decay is reported using proton-proton collision data collected at \sqrt{s} = 13 TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60 fb^{-1}. The ratio of the branching fractions B(Λ_{b}^{0} → J/ψΛφ)/B(Λ_{b}^{0} → J/ψ(2s)Λ) is measured to be 8.26 ± 0.90(stat) ± 0.68 (syst) ± 0.11(B)) x 10^{-2}, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of φ and ψ(2s) decays to the reconstructed final states.
| Type: | Article |
|---|---|
| Title: | Observation of the Λ_{b}^{0} → J/ψΛφ decay in proton-proton collisions at \sqrt{s} = 13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2020.135203 |
| Publisher version: | https://doi.org/10.1016/j.physletb.2020.135203 |
| Language: | English |
| Additional information: | © 2020 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | CMS, b physics, Heavy-flavor spectroscopy, Computing |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10097470 |
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