Search for RPV supersymmetry with three or more leptons and b-tags

We present a search for anomalous production of events with three or more isolated leptons produced in pp collisions at $\sqrt{s} = 8$ TeV collected by the CMS experiment at the LHC. We analyze 9.2 $\textrm{fb}^{-1}$ of data collected by the CMS experiment during the 2012 LHC run. The search is applicable to any model of new physics that produces multiple leptons. We categorize observed multilepton events into exclusive search channels based on the identity and kinematics of the objects in the events and ordered by the amount of expected standard model background. We emphasize a data-based estimation of the standard model backgrounds but also use simulation to estimate some of the backgrounds when appropriate. We interpret search results in the context of $R$-parity-violating models, for which the presence of missing transverse energy is not guaranteed due to the absence of stable supersymmetric particles. We derive exclusion limits in a variety of supersymmetry topologies with $R$-parity violation and in a model that has an exotic quark.