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Scientific article
Open access
English

Search for vector-boson resonances decaying into a top quark and a bottom quark using pp collisions at \sqrt{s} = 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, no. 12, 73
Publication date2023
First online date2023-12-12
Abstract

A search for a new massive charged gauge boson, W′, is performed with the ATLAS detector at the LHC. The dataset used in this analysis was collected from proton-proton collisions at a centre-of-mass energy of $ \sqrt{s} $ = 13 TeV, and corresponds to an integrated luminosity of 139 fb$^{−1}$. The reconstructed tb invariant mass is used to search for a W′ boson decaying into a top quark and a bottom quark. The result is interpreted in terms of a W′ boson with purely right-handed or left-handed chirality in a mass range of 0.5–6 TeV. Different values for the coupling of the W′ boson to the top and bottom quarks are considered, taking into account interference with single-top-quark production in the s-channel. No significant deviation from the background prediction is observed. The results are expressed as upper limits on the W′ → tb production cross-section times branching ratio as a function of the W′-boson mass and in the plane of the coupling vs the W′-boson mass.

eng
Keywords
  • Beyond Standard Model
  • Hadron-Hadron Scattering
  • P p: scattering
  • P p: colliding beams
  • Resonance: production
  • Vector boson: search for
  • Resonance: hadronic decay
  • W': hadroproduction
  • W': hadronic decay
  • Top: particle identification
  • Bottom: particle identification
  • Mass spectrum: (top bottom)
  • ATLAS
  • W': left-handed
  • W': coupling
  • W': mass
  • Channel cross section: branching ratio: upper limit
  • Mass dependence
  • Interference
  • CERN LHC Coll
  • Background
  • Gauge boson
  • W': right-handed
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Search for vector-boson resonances decaying into a top quark and a bottom quark using <i>pp</i> collisions at <i> \sqrt{s} </i> = 13 TeV with the ATLAS detector. In: The journal of high energy physics, 2023, vol. 2023, n° 12, p. 73. doi: 10.1007/jhep12(2023)073
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ISSN of the journal1029-8479
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