Journal
PHYSICS LETTERS B
Volume 842, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2022.137534
Keywords
CMS; Standard model physics; Higgs boson; Z boson; Rare decays psi root
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Decays of the Higgs boson into a Z boson and a J/ψ or ψ(2S) meson are searched for in four-lepton final states with the CMS detector at the LHC. Using a data set of proton-proton collisions corresponding to an integrated luminosity of 138 fb-1, decays of the Higgs and Z boson into quarkonium pairs are also searched for. No evidence for these decays has been observed, and upper limits at the 95% confidence level are placed on the corresponding branching fractions.
Decays of the Higgs boson into a Z boson and a J/& psi; or & psi;(2S) meson are searched for in four-lepton final states with the CMS detector at the LHC. A data set of proton-proton collisions corresponding to an integrated luminosity of 138 fb-1 is used. Using the same data set, decays of the Higgs and Z boson into quarkonium pairs are also searched for. An observation of such decays with this sample would indicate the presence of physics beyond the standard model. No evidence for these decays has been observed and upper limits at the 95% confidence level are placed on the corresponding branching fractions (B). Assuming longitudinal polarization of the Higgs boson decay products, 95% confidence level observed upper limits for B(H & RARR; ZJ/& psi;) and B(H & RARR; Z & psi;(2S)) are 1.9 x 10-3 and 6.6 x 10-3, respectively.& COPY; 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
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