CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-PROC-2010-046
Title	Performance of the ATLAS tau trigger with 7 TeV collision data at the LHC
Author(s)	Robinson, M (Oregon U.)
Corporate Author(s)	The ATLAS collaboration
Imprint	15 Nov 2010. - 3 p.
In:	35th International Conference on High Energy Physics, Paris, France, 22 - 28 Jul 2010, pp.042
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	trigger ; tau
Abstract	Tau leptons are a fundamental ingredient in the discovery of new physics at the LHC. The reconstruction of hadronic tau decays at the trigger level, although a very challenging task in proton-proton collision environments, allows us to double the sample of tau decays collected, and provides additional discovery power to final states which include tau leptons. In this contribution we show the understanding of the tau trigger system using data collected with the ATLAS detector at the LHC in proton-proton collisions at a center-of-mass energy of 7 TeV. We present the most relevant quantities used in the different stages of the trigger selection, and the trigger efficiencies as a function of ET using tau-like QCD events passing the offline reconstruction and identification selection.

Corresponding record in: Inspire