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

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 $\sqrt{s}$ = 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-1/2 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.

39 pages in total, author list starting page 22, 9 figures, 5 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-54/

References in corpus (18)

• An Introduction to PYTHIA 8.2
• The ATLAS Simulation Infrastructure
• Production and Integration of the ATLAS Insertable B-Layer
• Orientifold theory dynamics and symmetry breaking
• Muon reconstruction and identification efficiency in ATLAS using the full Run 2 $pp$ collision data set at $\sqrt{s}=13$ TeV
• ATLAS data quality operations and performance for 2015-2018 data-taking
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Performance of the ATLAS Track Reconstruction Algorithms in Dense Environments in LHC Run 2
• Reconciling Supersymmetry and Left-Right Symmetry
• Dark matter with invisible light from heavy double charged leptons of almost-commutative geometry?
• Physics of Dark Matter in the Light of Dark Atoms
• Performance of the missing transverse momentum triggers for the ATLAS detector during Run-2 data taking
• Almost-Commutative Geometries Beyond the Standard Model
• Results of the Search for Strange Quark Matter and Q-balls with the SLIM Experiment
• Search for long-lived, multi-charged particles in pp collisions at sqrt(s)=7 TeV using the ATLAS detector
• Performance of the ATLAS Level-1 topological trigger in Run 2
• Search for heavy charged long-lived particles in proton-proton collisions at $\sqrt{s}=13$ TeV using an ionisation measurement with the ATLAS detector
• High Energy Positrons and Gamma Radiation from Decaying Constituents of a two-component Dark Atom Model

Cited by in corpus (4)

• Fractionally Charged Particles at the Energy Frontier: The SM Gauge Group and One-Form Global Symmetry
• Search for Highly-Ionizing Particles in pp Collisions During LHC Run-2 Using the Full MoEDAL Detector
• Resummation schemes for high-electric-charge objects leading to improved experimental mass limits
• Long-lived doubly charged scalars in the left-right symmetric model: catalyzed nuclear fusion and collider implications