Search for stable mutli-charged particles with the ATLAS experiment

A search for stable massive particles with electric charges of $|q|=2e$ to $|q|=6e$ is performed with the ATLAS detector at the LHC. A dataset of 4.4$\, \text{fb}^{-1}$ is searched for highly ionization muon signatures. No deviation from the standard model expectations is observed and 95% CL upper cross section limits on the order of $\mathcal{O}(0.01 - 0.1\, \text{pb})$ are set. This result represents the first limit on the production cross section of stable massive particles with charges $|q|=2e$ to $|q|=5e$ published by the ATLAS collaboration and improves a previous limit on particles with $|q|=6e$ by two orders of magnitude.