CERN Accelerating science

ATLAS Slides
Report number	ATL-PHYS-SLIDE-2011-175
Title	In Situ Measurements of Jet Energy Scale in ATLAS
Author(s)	Schouten, Doug (Simon Fraser University)
Corporate author(s)	The ATLAS collaboration
Submitted by	[email protected] on 26 Apr 2011
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	jet energy scale ; JES ; JETETMISS
Abstract	Hadron jets are the most commonly observed objects in p-p collisions at the Large Hadron Collider at CERN. Because of this, they are part of the final state of almost any process, and are an important probe in searches for extensions of the Standard Model. A precise knowledge of the energy calibration for jets is difficult to ascertain for a number of reasons, and is a necessary ingredient in the ATLAS experimental program. We will present in-situ techniques and results for the jet energy scale at ATLAS using recent collision data. We have demonstrated an understanding of the necessary jet energy corrections to within ~ 4% in the central region of the calorimeter.