Search for Chargino-Neutralino Associated Production in Dilepton Final States with Tau Leptons

Abstract

We present a search for chargino and neutralino supersymmetric particles yielding same signed dilepton final states including one hadronically decaying tau lepton using 6.0 $f{b}^{-1}$ of data collected by the the CDF II detector. This signature is important in SUSY models where, at high $\tan {\hat{I}}^2$, the branching ratio of charginos and neutralinos to tau leptons becomes dominant. We study event acceptance, lepton identification cuts, and efficiencies. We set limits on the production cross section as a function of SUSY particle mass for certain generic models.