Search for trilepton chargino-neutralino signal at CDF

The production of chargino-neutralino and their subsequent leptonic decay is one of the most promising supersymmetry (SUSY) signatures at the Tevatron collider. We present the status of a CDF search for trilepton and missing transverse energy final states. To increase our sensitivity to SUSY signals (or any other new phenomena) we include low-$p_T$ electrons and muons ($p_T>5$~GeV/$c$), low dilepton masses ($M_{\ell\ell}>10$~GeV/$c^2$), forward leptons ($|\eta|>1$), isolated tracks, and tau-jets from hadronic tau decays. Special care is taken for the light-flavor and heavy-flavor QCD background that is significant in some of the kinematic regions we explore.