Search for ZZ and ZH production in the $\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$ final state using proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

A search for ZZ and ZH production in the $\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$ final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton-proton collisions corresponding to an integrated luminosity of 133 fb${}^{-1}$ collected at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. The analysis introduces several novel techniques for deriving and validating a multi-dimensional background model based on control samples in data. A multiclass multivariate classifier customized for the $\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$ final state is developed to derive the background model and extract the signal. The data are found to be consistent, within uncertainties, with the SM predictions. The observed (expected) upper limits at 95% confidence level are found to be 3.8 (3.8) and 5.0 (2.9) times the SM prediction for the ZZ and ZH production cross sections, respectively.

arXiv commentReplaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-22-011 (CMS Public Pages)

References in corpus (53)

• 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
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Parton distributions for the LHC Run II
• Confidence Level Computation for Combining Searches with Small Statistics
• Parton distributions from high-precision collider data
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Heavy Flavour Hadroproduction
• Particle-flow reconstruction and global event description with the CMS detector
• The CMS trigger system
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Merging meets matching in MC@NLO
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• A portrait of the Higgs boson by the CMS experiment ten years after the discovery
• Neutral Higgs-Boson Pair Production at Hadron Colliders: QCD Corrections
• Observation of Higgs boson decay to bottom quarks
• Performance of the CMS Level-1 trigger in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD
• MINLO: Multi-scale improved NLO
• Observation of $H\to b\bar{b}$ decays and $VH$ production with the ATLAS detector
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• HW/HZ + 0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO
• Jet Flavour Classification Using DeepJet
• Higgs boson pair production at NNLO with top quark mass effects
• HDECAY: Twenty++ Years After
• Top-pair production and decay at NLO matched with parton showers
• Pileup mitigation at CMS in 13 TeV data
• Search for resonant pair production of Higgs bosons decaying to two bottom quark-antiquark pairs in proton-proton collisions at 8 TeV
• Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
• Threshold resummation effects in Higgs boson pair production at the LHC
• Higgs boson potential at colliders: status and perspectives
• Evidence for the Higgs boson decay to a bottom quark-antiquark pair
• $gg\to HH$: Combined Uncertainties
• Search for Higgs boson pair production in the $b\bar{b}b\bar{b}$ final state from $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers
• Search for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• $ZZ\to {\ell }^{+}{\ell }^{-}{\ell }^{\prime +}{\ell }^{\prime -}$ cross-section measurements and search for anomalous triple gauge couplings in 13 TeV $pp$ collisions with the ATLAS detector
• Search for nonresonant Higgs boson pair production in final states with two bottom quarks and two photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Higher Order QCD predictions for Associated Higgs production with anomalous couplings to gauge bosons
• Measurements of pp $\to$ ZZ production cross sections and constraints on anomalous triple gauge couplings at $\sqrt{s}=$ 13 TeV
• Search for resonant and non-resonant Higgs boson pair production in the $b\bar{b}{\tau }^{+}{\tau }^{-}$ decay channel using 13 TeV $pp$ collision data from the ATLAS detector
• Search for nonresonant pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for resonant pair production of Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at 13 TeV
• Search for nonresonant pair production of highly energetic Higgs bosons decaying to bottom quarks
• Search for nonresonant Higgs boson pair production in the $\mathrm{b}\overline{\mathrm{b}}\mathrm{b}\overline{\mathrm{b}}$ final state at $\sqrt{s}=$ 13 TeV
• Search for nonresonant Higgs boson pair production in final state with two bottom quarks and two tau leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Measurement of simplified template cross sections of the Higgs boson produced in association with W or Z bosons in the H $\to$ $\mathrm{b}\bar{\mathrm{b}}$ decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Cited by in corpus (3)

• Soft gluon resummation for gluon fusion $ZH$ production
• Next to Soft Threshold Resummation for $VH$ Production
• Threshold improved $ZH$ production at the LHC