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Scientific article
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English

A search for new resonances in multiple final states with a high transverse momentum Z boson in \sqrt{s}=13 TeV pp collisions with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, 36
Publication date2023
First online date2023-06-07
Abstract

A generic search for resonances is performed with events containing a Z boson with transverse momentum greater than 100 GeV, decaying into e$^{+}$e$^{−}$ or μ$^{+}$μ$^{−}$. The analysed data collected with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider correspond to an integrated luminosity of 139 fb$^{−1}$. Two invariant mass distributions are examined for a localised excess relative to the expected Standard Model background in six independent event categories (and their inclusive sum) to increase the sensitivity. No significant excess is observed. Exclusion limits at 95% confidence level are derived for two cases: a model-independent interpretation of Gaussian-shaped resonances with the mass width between 3% and 10% of the resonance mass, and a specific heavy vector triplet model with the decay mode W′ → ZW →ℓℓqq.

eng
Keywords
  • Beyond Standard Model
  • Hadron-Hadron Scattering
  • Particle and Resonance Production
  • P p: scattering
  • P p: colliding beams
  • Resonance: production
  • Narrow resonance
  • Mass: width
  • Transverse momentum: high
  • Z0: transverse momentum
  • Z0: leptonic decay
  • Electron: pair production
  • Muon: pair production
  • W': decay modes
  • Model: triplet
  • Resonance: mass
  • ATLAS
  • Category
  • Sensitivity
  • Mass spectrum: (lepton+ lepton-)
  • Channel cross section: branching ratio: upper limit
  • CERN LHC Coll
  • Background
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. A search for new resonances in multiple final states with a high transverse momentum <i>Z</i> boson in <i>\sqrt{s}=13 </i>TeV <i>pp</i> collisions with the ATLAS detector. In: The journal of high energy physics, 2023, vol. 2023, p. 36. doi: 10.1007/jhep06(2023)036
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Article (Published version)
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ISSN of the journal1029-8479
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