Improved search for a Higgs boson in the $H \rightarrow \tau \tau$ decay channel at CDF

We present an improved search for a Higgs boson in the channel $gg \rightarrow H \rightarrow \tau \tau$ based on data collected with the CDF detector at the Tevatron collider. Improvements include optimization of the signal fitting procedure and increased signal acceptance resulting from a better identification technique for hadronic $\tau$ lepton decays. The latter is based on a likelihood-based algorithm which gives superior energy resolution, better definition of other identification variables such as jet invariant mass, and a direct estimate of the uncertainty in the energy measurement for each individual hadronic $\tau$ candidate.