Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-09-30
Physics
High Energy Physics
High Energy Physics - Experiment
3 pages, 8 figures, 1 table, contribution to the 21st Hadron Collider Physics Symposium (HCP 2010), Toronto, Canada, 23 - 27 A
Scientific paper
For many signals in the Standard Model including the Higgs boson, and for new physics like Supersymmetry, $\tau$ leptons represent an important signature. This work shows the performance of the ATLAS $\tau$ reconstruction and identification algorithms. It will present a set of studies based on data taken in 2010 at a center-of-mass energy of $\sqrt{s}$ = 7 TeV. We measured some of the basic input quantities used for these identification methods from selected reconstructed $\tau$ candidates and compared the results to the prediction of different Monte Carlo simulation models. For early data taking a cut-based identification method will be used. We also measured the background efficiency for the cut-based $\tau$ identification.
for the ATLAS Collaboration
Gosdzik Bjoern
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