Search for heavy long-lived multi-charged particles in pp collisions at √s = 8 TeV using the ATLAS detector
Date of Archiving2015
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Experimental High Energy Physics
A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2012 at s√=8 TeV from pp collisions corresponding to an integrated luminosity of 20.3 fb−1 are examined. Particles producing anomalously high ionisation, consistent with long-lived massive particles with electric charges from |q|=2e to |q|=6e are searched for. No signal candidate events are observed, and 95% confidence level cross-section upper limits are interpreted as lower mass limits for a Drell-Yan production model. The mass limits range between 660 and 785 GeV. Analysis final state is a muon-like particle within the fiducial region of pT > 40 GeV and |η| < 2.0. Background estimation procedure is purely data-driven.