Search for pair production of boosted Higgs bosons via vector-boson fusion in the $b\bar{b}b\bar{b}$ final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract

A search for Higgs boson pair production via vector-boson fusion is performed in the Lorentz-boosted regime, where a Higgs boson candidate is reconstructed as a single large-radius jet, using 140 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded by the ATLAS detector at the Large Hadron Collider. Only Higgs boson decays into bottom quark pairs are considered. The search is particularly sensitive to the quartic coupling between two vector bosons and two Higgs bosons relative to its Standard Model prediction, ${\kappa }_{2V}$. This study constrains ${\kappa }_{2V}$ to $0.55<{\kappa }_{2V}<1.49$ at 95% confidence level. The value ${\kappa }_{2V}=0$ is excluded with a significance of 3.8 standard deviations with other Higgs boson couplings fixed to their Standard Model values. A search for new heavy spin-0 resonances that would mediate Higgs boson pair production via vector-boson fusion is carried out in the mass range of 1-5 TeV for the first time under several model and decay-width assumptions. No significant deviation from the Standard Model hypothesis is observed and exclusion limits at 95% confidence level are derived.

arXiv comment42 pages in total, author list starting page 25, 8 figures, 1 table, published by Phys. Lett. B. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2022-02/

References in corpus (50)

• XGBoost: A Scalable Tree Boosting System
• 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
• 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
• A Brief Introduction to PYTHIA 8.1
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Theory and phenomenology of two-Higgs-doublet models
• Parton distributions for the LHC Run II
• Parton distributions with LHC data
• The ATLAS Simulation Infrastructure
• PDF4LHC recommendations for LHC Run II
• HDECAY: a Program for Higgs Boson Decays in the Standard Model and its Supersymmetric Extension
• Performance of the ATLAS Trigger System in 2015
• Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1
• Performance of pile-up mitigation techniques for jets in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector
• A portrait of the Higgs boson by the CMS experiment ten years after the discovery
• A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
• Neutral Higgs-Boson Pair Production at Hadron Colliders: QCD Corrections
• Jet reconstruction and performance using particle flow with the ATLAS Detector
• ATLAS data quality operations and performance for 2015-2018 data-taking
• Jet energy scale and resolution measured in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD
• Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
• Higgs boson pair production in gluon fusion at NLO with full top-quark mass dependence
• On the effect of resonances in composite Higgs phenomenology
• Parameterized Machine Learning for High-Energy Physics
• Luminosity determination in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector at the LHC
• Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
• Vector-Boson Fusion Higgs Pair Production at N${}^3$LO
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• Measurements of $WH$ and $ZH$ production in the $H\to b\bar{b}$ decay channel in $pp$ collisions at 13 TeV with the ATLAS detector
• $gg\to HH$: Combined Uncertainties
• Limits on the Higgs boson lifetime and width from its decay to four charged leptons
• An Analytical Method for the NLO QCD Corrections to Double-Higgs Production
• Higgs pair production in vector-boson fusion at the LHC and beyond
• In situ calibration of large-$R$ jet energy and mass in 13 TeV proton-proton collisions with the ATLAS detector
• NNLO QCD corrections to Higgs pair production via vector boson fusion at hadron colliders
• Search for Higgs boson pair production in the $\gamma \gamma W{W}^{\ast }$ channel using $pp$ collision data recorded at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for Higgs boson off-shell production in proton-proton collisions at 7 and 8 TeV and derivation of constraints on its total decay width
• Optimisation of large-radius jet reconstruction for the ATLAS detector in 13 TeV proton-proton collisions
• Search for dark matter produced in association with a Standard Model Higgs boson decaying into $b$-quarks using the full Run 2 dataset from the ATLAS detector
• Performance of the ATLAS Level-1 topological trigger in Run 2
• Evidence of off-shell Higgs boson production from $ZZ$ leptonic decay channels and constraints on its total width with the ATLAS detector
• Measurement of the $CP$ properties of Higgs boson interactions with $\tau$-leptons with the ATLAS detector
• Di-Higgs resonance searches in weak boson fusion

Cited by in corpus (3)

• Characterising the Higgs boson with ATLAS data from Run 2 of the LHC
• Fate of the scalar quartic couplings in the inert models
• Electroweak Higgs boson pair production: Updated inclusive cross sections