Abstract:
We search for pair production of doubly charged Higgs particles ($H^{\pm\pm}$) followed by decays into electron-tau (etau) and muon-tau (mu tau) pairs using data (350 pb-1) collected from $\bar{p} p$ collisions at $\sqrt{s}=1.96$ TeV by the CDF II experiment. We search separately for cases where three or four final-state leptons are detected, and combine results for exclusive decays to left-handed etau (\mu tau) pairs. We set an $H^{\pm\pm}$ lower mass limit of 114(112) GeV/c2 at the 95% confidence level.
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