Search for invisible Higgs boson decays in vector boson fusion at $\sqrt{s}=13$ TeV with the ATLAS detector

Abstract

We report a search for Higgs bosons that are produced via vector boson fusion and subsequently decay into invisible particles. The experimental signature is an energetic jet pair with invariant mass of $\mathcal{O}(1)$ TeV and $\mathcal{O}(100)$ GeV missing transverse momentum. The analysis uses 36.1 fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV recorded by the ATLAS detector at the LHC. In the signal region the 2252 observed events are consistent with the background estimation. Assuming a 125 GeV particle with Standard Model cross sections, the upper limit on the branching fraction of the Higgs boson decay into invisible particles is 0.37 at 95% CL where 0.28 was expected. This limit is interpreted in Higgs portal models to set limits on the WIMP-nucleon scattering cross section. We also consider invisible decays of additional scalar bosons with masses up to 3 TeV for which the upper limits on the cross section times branching fraction are in the range of $0.3-1.7$ pb.

42 pages in total, author list starting in page 25, 6 figures, 2 tables, published in Physics Letters B, Phys. Lett. B 793 (2019) 499. All figures including auxiliary figures are available at https://cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-37

References in corpus (23)

• 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
• Parton distributions for the LHC
• A direct empirical proof of the existence of dark matter
• Event generation with SHERPA 1.1
• Results from a search for dark matter in the complete LUX exposure
• A parton shower algorithm based on Catani-Seymour dipole factorisation
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC
• Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC
• Measurement of the $Z/{\gamma }^{\ast }$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector
• Higgs-field Portal into Hidden Sectors
• Search for invisible decays of a Higgs boson produced through vector boson fusion in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
• Searches for invisible decays of the Higgs boson in pp collisions at sqrt(s) = 7, 8, and 13 TeV
• Improved limits for Higgs-portal dark matter from LHC searches
• Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Invisible Higgs Decay Width vs. Dark Matter Direct Detection Cross Section in Higgs Portal Dark Matter Models
• Search for invisible particles produced in association with single-top-quarks in proton-proton collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for squarks and gluinos in final states with hadronically decaying $\tau$-leptons, jets, and missing transverse momentum using $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

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• Differential cross-section measurements for the electroweak production of dijets in association with a $Z$ boson in proton-proton collisions at ATLAS
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• The Higgs-portal for vector Dark Matter and the Effective Field Theory approach: a reappraisal
• Search for supersymmetry with a compressed mass spectrum in the vector boson fusion topology with 1-lepton and 0-lepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
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• Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector
• ATLAS searches for additional scalars and exotic Higgs boson decays with the LHC Run 2 dataset
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• The depleted Higgs boson: searches for universal coupling suppression, invisible decays, and mixed-in scalars
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• Model Characterization and Dark Matter in the Secluded $U(1{)}^{\prime }$ Model
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• One-loop contributions to the decay $H\to {\nu }_l{\bar{\nu }}_l\gamma$ in standard model revisited
• Light dark matter around 100 GeV from the inert doublet model
• Predictions of the ratio and asymmetry probes of the invisible $Z$-boson decay
• Constraints on exotic particle masses from flavor violating charged lepton decays and the role of interference
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• Searches for Higgs bosons with dark matter at the Large Hadron Collider