Search for Higgs boson decays into Z and J/ψ and for Higgs and Z boson decays into J/ψ or Y pairs in pp collisions at √s=13 TeV
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Published version
Author(s)
Type
Journal Article
Abstract
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. 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 → ZJ/ψ) and B(H → Zψ(2S)) are 1.9 × 10−3 and 6.6 × 10−3 , respectively.
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 → ZJ/ψ) and B(H → Zψ(2S)) are 1.9 × 10−3 and 6.6 × 10−3 , respectively.
Date Issued
2023-07-10
Date Acceptance
2022-10-21
Citation
Physics Letters B: Nuclear Physics and Particle Physics, 2023, 842
ISSN
0370-2693
Publisher
Elsevier
Journal / Book Title
Physics Letters B: Nuclear Physics and Particle Physics
Volume
842
Copyright Statement
© 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 SCOAP 3 .
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP 3 .
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001023769400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Astronomy & Astrophysics
CMS
HIERARCHY
Higgs boson
PARTON DISTRIBUTIONS
Physical Sciences
Physics
Physics, Nuclear
Physics, Particles & Fields
QUARK MASSES
Rare decays psi root
Science & Technology
Standard model physics
Z boson
Publication Status
Published
Article Number
ARTN 137534