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Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s=13 TeV using the ATLAS detector

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 847, 138316
Publication date2023
First online date2023-11-10
Abstract

A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015–2018 at s=13 TeV from pp collisions corresponding to an integrated luminosity of 139 fb−1 are examined. Particles producing anomalously high ionization, consistent with long-lived spin-½ massive particles with electric charges from |q|=2e to |q|=7e are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell–Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for |q|=2e particles, and the most stringent one, 1600 GeV, is for |q|=6e particles.

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Keywords
  • p p: scattering
  • p p: colliding beams
  • photon photon: fusion
  • channel cross section: upper limit
  • charge: electric
  • ionization: high
  • particle: massive
  • charged particle: long-lived
  • charged particle: mass
  • CERN LHC Coll
  • ATLAS
  • Drell-Yan process
  • mass: lower limit
  • experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at s=13 TeV using the ATLAS detector. In: Physics letters. B, 2023, vol. 847, p. 138316. doi: 10.1016/j.physletb.2023.138316
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ISSN of the journal0370-2693
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