The ATLAS tau trigger

MP Casado, C Belanger-Champagne, K Benslama, M Bosman, R Brenner, Z Czyczula, M Dam, S Demers, S Farrington, O Igonkina, A Kalinowski, N Kanaya, C Osuna, E Perez, E Ptacek, A Reinsch, A Saavedra, A Sfyrla, M Shamini, A SopczakD Strom, E Torrence, S Tsuno, V Vorwerk, Alan Watson, S Xella

Research output: Contribution to journalArticlepeer-review


The implementation of a trigger for hadronically decaying tau leptons at the Large Hadronic Collider (LHC) is challenging due to the high background rate, on the other hand it increases tremendously the discovery potential of ATLAS in searches for Standard Model (SM) or Supersymmetric (SUSY) Higgs or other more exotic final states. In this paper we describe the ATLAS tau trigger system, focusing on the early data taking period, and present results from studies based on GEANT 4 simulated events, including trigger rates and the acceptance of tau leptons from SM processes. In order to cope with the rate and optimize the efficiency of important physics channels, the results of the current simulation studies indicate that ATLAS tau triggers should include either relatively high transverse momentum single tau signatures, or low transverse momentum tau signatures in combination with other signatures, such as missing transverse energy, leptons, or jets.
Original languageEnglish
Pages (from-to)291-298
Number of pages8
JournalNuclear Physics B - Proceedings Supplements
Publication statusPublished - 1 Apr 2009
EventInternational Workshop on Tau Lepton Physics, 10th - Novosibirsk, Russian Federation
Duration: 22 Sept 200825 Sept 2008


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