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Scientific article
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English

Search for heavy resonances decaying into a Z or W boson and a Higgs boson in final states with leptons and b-jets in 139 fb-1 of pp collisions at \sqrt{s}=13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, no. 6, 16
Publication date2023
First online date2023-06-05
Abstract

This article presents a search for new resonances decaying into a Z or W boson and a 125 GeV Higgs boson h , and it targets the $$ \nu \overline{\nu}b\overline{b} $$ ν ν ¯ b b ¯ , $$ {\ell}^{+}{\ell}^{-}b\overline{b} $$ ℓ + ℓ − b b ¯ , or $$ {\ell}^{\pm}\nu b\overline{b} $$ ℓ ± νb b ¯ final states, where ℓ = e or μ , in proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV. The data used correspond to a total integrated luminosity of 139 fb − 1 collected by the ATLAS detector during Run 2 of the LHC at CERN. The search is conducted by examining the reconstructed invariant or transverse mass distributions of Zh or Wh candidates for evidence of a localised excess in the mass range from 220 GeV to 5 TeV. No significant excess is observed and 95% confidence-level upper limits between 1.3 pb and 0.3 fb are placed on the production cross section times branching fraction of neutral and charged spin-1 resonances and CP-odd scalar bosons. These limits are converted into constraints on the parameter space of the Heavy Vector Triplet model and the two-Higgs-doublet model.

eng
Keywords
  • Hadron-Hadron Scattering
  • Beyond the Standard Model Searches
  • P p: scattering
  • P p: colliding beams
  • Resonance: production
  • Resonance: heavy
  • Boson: scalar
  • Model: triplet
  • Mass spectrum: transverse
  • ATLAS
  • Higgs particle: associated production
  • Vector boson: associated production
  • Vector boson: leptonic decay
  • Higgs particle: hadronic decay
  • Channel cross section: branching ratio: upper limit
  • Spin: resonance
  • Higgs particle: doublet
  • CERN Lab
  • Final state: ((n)jet lepton)
  • Final state: ((n)jet dilepton)
  • Jet: bottom
  • Bottom: pair production
  • Bottom: particle identification
  • CERN LHC Coll
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Search for heavy resonances decaying into a <i>Z</i> or <i>W</i> boson and a Higgs boson in final states with leptons and <i>b</i>-jets in 139 <i>fb</i><sup><i>-1 </i></sup>of <i>pp</i> collisions at <i>\sqrt{s}=13 </i>TeV with the ATLAS detector. In: The journal of high energy physics, 2023, vol. 2023, n° 6, p. 16. doi: 10.1007/jhep06(2023)016
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Article (Published version)
Identifiers
ISSN of the journal1029-8479
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