Tau trigger at the ATLAS experiment

Details Tau trigger at the ATLAS experiment Tau trigger at the ATLAS experiment

2008-10-02

arxiv.org/abs/0810.0465v4

Physics

High Energy Physics

High Energy Physics - Experiment

Poster at ICHEP08, Philadelphia, USA, July 2008. 4 pages, LaTeX, 7 eps, author list updated, reference added

Scientific paper

Many theoretical models, like the Standard Model or SUSY at large tan(beta), predict Higgs bosons or new particles which decay more abundantly to final states including tau leptons than to other leptons. At the energy scale of the LHC, the identification of tau leptons, in particular in the hadronic decay mode, will be a challenging task due to an overwhelming QCD background which gives rise to jets of particles that can be hard to distinguish from hadronic tau decays. Equipped with excellent tracking and calorimetry, the ATLAS experiment has developed tau identification tools capable of working at the trigger level. This contribution presents tau trigger algorithms which exploit the main features of hadronic tau decays and describes the current tau trigger commissioning activities.

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