Jet measurements in ATLAS

Research output: Contribution to journalConference articlepeer-review


The reconstruction of jets generated in the proton-proton collisions at the Large Hadron Collider (LHC) at a center of mass energy of p √s = 7 TeV with the ATLAS detector is discussed. Beginning with a brief review of the calorimeter signal definitions relevant for jetfinding, and the use of reconstructed charged particle tracks, the jet reconstruction strategy is described in some detail. Emphasis is put on the jet energy scale (JES) calibration strategy applied for first data, which is based on a short sequence of data driven and simulation based calibrations and corrections to restore the measured jet energFi to particle level. The level of understanding of the signal patterns entering the JES corrections is shown for selected variables in comparisons to simulations. The present systematic uncertainties on the JES, which can be as low as 2% for central jets, are presented and analyzed with respect to the individual fractional contributions entering their determination. Some characteristic jet reconstruction performance and selected results from the first year of jet physics with ATLAS in a newly accessible kinematic domain are shown in conclusion.

Original languageEnglish (US)
Article number012002
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 2011
Event2011 Pisa Workshop on Jet Reconstruction and Spectroscopy at Hadron Colliders - Pisa, Italy
Duration: Apr 18 2011Apr 19 2011

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Jet measurements in ATLAS'. Together they form a unique fingerprint.

Cite this