Search for heavy long-lived multicharged particles in proton-proton collisions at √s=13 TeV using the ATLAS detector

Abstract

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 | = 2 e to | q | = 7 e , 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.