Aaboud, M.Rogan, ChristopherATLAS Collaboration2021-01-272021-01-272019-03-14M. Aaboud et al., "Search for heavy long-lived multicharged particles in proton-proton collisions at √s = 13 TeV using the ATLAS detector", Phys. Rev. D 99, 052003, 14 March 2019, American Physical Society, https://doi.org/10.1103/PhysRevD.99.052003https://hdl.handle.net/1808/31279This work is licensed under a Creative Commons Attribution 4.0 International License.A search for heavy long-lived multicharged particles is performed using the ATLAS detector at the LHC. Data with an integrated luminosity of 36.1 fb−1 collected in 2015 and 2016 from proton-proton collisions at √s=13   TeV are examined. Particles producing anomalously high ionization, consistent with long-lived massive particles with electric charges from |q| = 2e to |q| = 7e, are searched for. No events are observed, and 95% confidence level cross-section upper limits are interpreted as lower mass limits for a Drell-Yan production model. Multicharged particles with masses between 50 and 980–1220 GeV (depending on their electric charge) are excluded.© 2019 CERN, for the ATLAS Collaboration.http://creativecommons.org/licenses/by/4.0/Article10.1103/PhysRevD.99.052003openAccess