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Search for heavy long-lived multi-charged particles in pp collisions at √ s =8 TeV using the ATLAS detector

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Article number362
<mark>Journal publication date</mark>2015
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number8
Volume75
Number of pages23
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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−1are 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.