--- UserCode/Friis/TancNote/note/abstract.tex 2010/03/17 20:01:25 1.1 +++ UserCode/Friis/TancNote/note/abstract.tex 2010/04/29 23:23:12 1.3 @@ -1,11 +1,9 @@ -Due to the low signal rates for many new physics scenarios and large QCD -backgrounds, efficiently identifying tau leptons while maintaining an extremely -low mis-tag rate will be an important part of the CMS physics program. The CMS -particle flow algorithm combines all sub-detectors to provide a global -reconstruction of a collision event and potentially improves spatial and energy -resolution. Using the reconstructed objects from particle flow, an algorithm -using an ensemble of neural nets corresponding to different tau decay -resonances has been developed. This algorithm provides a large performance -improvement with respect to previous CMS tau identification strategies and can -potentially increase the reach of many CMS searches for physics beyond the -Standard Model. Preliminary results are presented in this summary. +The Tau Neural Classifier (TaNC) is a novel algorithm for identification of +hadronic tau decays. The algorithm includes two components, the reconstruction +of tau lepton hadronic decay modes and discrimination of tau lepton hadronic +decays from quark and gluon jets. The reconstruction of decay modes is based +on the reconstruction of individual charged hadrons and photons by the +particle--flow algorithm and is utilized in the discrimination to train a set +of neural networks using input variables that are sensitive to particular decay +modes. We observe a significant improvement in identification performance in +comparison to previous algorithms.