CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-PROC-2009-001 ; ATL-COM-DAQ-2008-019
Title	Hadronic Calibration for the ATLAS Jet Trigger
Author(s)	Anjos, N (LIP, Lisbon) ; Conde-Muíño, P (LIP, Lisbon) ; Aracena, I (SLAC) ; Santamarina-Rios, C (McGill U.) ; Schram, M (McGill U.)
Imprint	16 Dec 2008. - 3 p.
Note	For Physics at LHC 2008 proceedings deadline is 20th December
In:	4th Conference on Physics at LHC, Split, Croatia, 29 Sep - 04 Oct 2008
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Hadronic Calibration ; Jet Trigger
Abstract	The ATLAS trigger system must reduce the 40 MHz event rate delivered by the LHC to 200Hz. This is done by selecting online high pT objects. In proton-proton collisions, the main background for jets are also jets. Thus, the main difficulty for the jet trigger is to accurately measure the jet energy, in order to distinguish high pT jets from low pT ones. The measurement of the jet energy scale is a complex issue, specially for non-compensating hadronic calorimeters, like the ATLAS one. This paper describes the strategies used to perform the hadronic calibration for the ATLAS jet trigger.
Copyright/License	Preprint: (License: CC-BY-4.0)

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