| We present a search for the production of three or more isolated leptons in proton–proton collision data at s = 7 TeV, corresponding to an integrated luminosity of 4.98 fb −1, that was collected by the CMS detector during the 2011 LHC run. The possible final states are classified according to a number of physical properties to properly account for varying Standard Model backgrounds and signal yields. Several supersymmetric (SUSY) models that yield multi-lepton events are investigated, and mass exclusions along with cross-section upper limits are presented for an R-parity conserving co-NLSP model, an R-parity violating model (both from strong SUSY production) as well as for several SUSY topologies that lead to electroweak pair production of charginos and neutralinos which then decay to multi-lepton final states. No new physics was observed. |
