Search for Higgs boson decays into Z and J/$\psi$ and for Higgs and Z boson decays into J/$\psi$ or ${\rm Y}$ pairs in pp collisions at $\sqrt{s}$ = 13 TeV

Abstract

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 ($\mathcal{B}$). Assuming longitudinal polarization of the Higgs boson decay products, 95% confidence level observed upper limits for $\mathcal{B}$(H $\to$ J/$\psi$) and $\mathcal{B}$(H $\to$ Z$\psi$(2S)) are 1.9$\times$10${}^{-3}$ and 6.6$\times$10${}^{-3}$, respectively.

arXiv commentReplaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-20-008 (CMS Public Pages)

References in corpus (41)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• A Large Mass Hierarchy from a Small Extra Dimension
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• An Introduction to PYTHIA 8.2
• FastJet user manual
• Parton distributions for the LHC
• New parton distributions for collider physics
• Confidence Level Computation for Combining Searches with Small Statistics
• Parton distributions from high-precision collider data
• PDF4LHC recommendations for LHC Run II
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Combining QCD and electroweak corrections to dilepton production in FEWZ
• Fermion Masses, Mixings and Proton Decay in a Randall-Sundrum Model
• NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG
• NLO Higgs boson production via gluon fusion matched with shower in POWHEG
• Impact of Heavy Quark Masses on Parton Distributions and LHC Phenomenology
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• On the spin and parity of a single-produced resonance at the LHC
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• Towards the experimental clarification of quarkonium polarization
• Higgs boson decays to quarkonia and the Hccbar coupling
• Evidence for Higgs boson decay to a pair of muons
• Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques
• Higgs-dependent Yukawa couplings
• A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
• An Exclusive Window onto Higgs Yukawa Couplings
• Probing the nature of the Higgs-like Boson via h -> VF decays
• Observation and measurements of the production of prompt and non-prompt $J/\psi$ mesons in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Higgs bosons with large couplings to light quarks
• Searches for exclusive Higgs and $Z$ boson decays into $J/\psi \gamma$, $\psi (2S)\gamma$, and ${\rm Y}(nS)\gamma$ at $\sqrt{s}=13$ TeV with the ATLAS detector
• Direct constraint on the Higgs-charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
• Search for rare decays of Z and Higgs bosons to J$/\psi$ and a photon in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• A note on Higgs decays into $Z$ boson and $J/\Psi ({\rm Y})$
• Exclusive Weak Radiative Higgs Decays in the Standard Model and Beyond
• Double vector quarkonia production in exclusive Higgs boson decays
• Double Charmonia Production in Exclusive $Z$ Boson Decays
• Excited heavy quarkonium production in Higgs boson decays
• $Z$-boson polarization as a model-discrimination analyzer

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