Search for Heavy Resonances Decaying to Long-Lived Neutral Particles in the Displaced Lepton Channel

A search is performed for a heavy resonance decaying to two long-lived massive neutral particles. The process would manifest itself as a distinct topological signature appearing as a pair of leptons originating from a vertex far displaced from the LHC beam spot. The events were selected during pp collisions at 7 \TeV using approximately 1.1 \fbinv of integrated luminosity collected by the CMS detector at the LHC. No significant excess is observed above Standard Model background, and a 95\% CL upper limit is set on the production cross section times the branching ratio as a function of the long-lived particle lifetime.