Search for long-lived, multi-charged particles in pp collisions at √s =7 TeV using the ATLAS detector

CERN-LHC. Measurements of the upper limits of cross sections for the production of highly ionising, penetrating particles with electric charges, |q|, from 2e to 6e in proton-proton collisions at a centre-of-mass energy of 7 TeV. The data, collected during the 2011 running period, have an integrated luminosity of 4.4 fb-1. The observed upper limits are present together with the expected limits. Also shown are the rapidly falling cross sections from the Drell-Yan model.