Tau Trigger at the ATLAS Experiment

The tau trigger is designed to select hadronically decaying taus efficiently while keeping the QCD background rate under control at the same time. This challenging task is motivated by the possibility to improve the prospects of new physics discoveries at higher energy scales, as accessible by the LHC. In many searches at higher luminosities for new physics, among them the search for a SM Higgs and for signatures of various SUSY models, the signal significance can be increased substantially with the help of tau decay channels. The ATLAS collaboration has developed tools to identify taus at the trigger level that use the advanced tracking and calorimetry capabilities of the ATLAS detector. This poster summarizes the motivation, implementation and expected performance as well as the future prospects of the ATLAS Tau Trigger.