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Scientific article
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English

Search for dark matter produced in association with a dark Higgs boson decaying into W+W- in the one-lepton final state at \sqrt{s}=13 TeV using 139 fb-1 of pp collisions recorded with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, no. 7, 116
Publication date2023
First online date2023-07-13
Abstract

Several extensions of the Standard Model predict the production of dark matter particles at the LHC. A search for dark matter particles produced in association with a dark Higgs boson decaying into W$^{+}$W$^{−}$ in the $ {\ell}^{\pm}\nu q{\overline{q}}^{\prime }, $ final states with ℓ = e, μ is presented. This analysis uses 139 fb$^{−1}$ of pp collisions recorded by the ATLAS detector at a centre-of-mass energy of 13 TeV. The W$^{±}$ → $ q\overline{q^{\prime }} $ decays are reconstructed from pairs of calorimeter-measured jets or from track-assisted reclustered jets, a technique aimed at resolving the dense topology from a pair of boosted quarks using jets in the calorimeter and tracking information. The observed data are found to agree with Standard Model predictions. Scenarios with dark Higgs boson masses ranging between 140 and 390 GeV are excluded.[graphic not available: see fulltext]

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Keywords
  • Dark Matter
  • Hadron-Hadron Scattering
  • P p: scattering
  • P p: colliding beams
  • Dark matter: associated production
  • Higgs particle: associated production
  • Higgs particle: decay modes
  • W: pair production
  • Higgs particle: mass: lower limit
  • Hidden sector
  • ATLAS
  • Final state: ((n)jet lepton)
  • Electron
  • Muon
  • Calorimeter
  • CERN LHC Coll
  • Topology
  • Boosted particle
  • Channel cross section: branching ratio: upper limit
  • Track data analysis: jet
  • Data analysis method
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Search for dark matter produced in association with a dark Higgs boson decaying into <i>W</i><sup><i>+</i></sup><i>W</i><sup><i>-</i> </sup>in the one-lepton final state at <i>\sqrt{s}</i>=13 TeV using 139 fb<sup>-1 </sup>of <i>pp </i>collisions recorded with the ATLAS detector. In: The journal of high energy physics, 2023, vol. 2023, n° 7, p. 116. doi: 10.1007/jhep07(2023)116
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ISSN of the journal1029-8479
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