ATLAS jet energy scale and resolution in early Run 2

G. OTERO Y GARZON, ET. AL., THE ATLAS COLLABORATION

PHYSICAL REVIEW D

AMER PHYSICAL SOC

Lugar: New York; Año: 2017

1550-7998

Jet energy scale measurements and their systematic uncertainties are reported for jets measured with the ATLAS detector using proton-proton collision data with a center-of-mass energy of √s=13  TeV, corresponding to an integrated luminosity of 3.2  fb−1 collected during 2015 at the LHC. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells, using the anti-ktalgorithm with radius parameter R=0.4. Jets are calibrated with a series of simulation-based corrections and in situ techniques.An uncertainty of about 4.5% is found for low-pT jets with pT=20  GeV in the central region, dominated by uncertainties in the corrections for multiple proton-proton interactions. The calibration of forward jets (|η|>0.8) is derived from dijet pT balance measurements. For jets of pT=80  GeV, the additional uncertainty for the forward jet calibration reaches its largest value of about 2% in the range |η|>3.5 and in a narrow slice of 2.2<|η|<2.4.