$E_{\text{T}}^{\text{miss}}$ performance in the ATLAS detector using 2015-2016 LHC $pp$ collisions - INSPIRE

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$E_{\text{T}}^{\text{miss}}$ performance in the ATLAS detector using 2015-2016 LHC $pp$ collisions

ATLAS

Collaboration

Jun 21, 2018

33 pages

Report number:

ATLAS-CONF-2018-023

Experiments:

CERN-LHC-ATLAS

View in:

CERN Document Server

reference search272 citations

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Abstract:

The reconstruction and calibration algorithms used to measure missing transverse momentum (

E_{\text{T}}^{\text{miss}}

) with the ATLAS detector utilise energy deposits within the calorimeter and tracks reconstructed in the inner detector and the muon spectrometer. The performance of the

E_{\text{T}}^{\text{miss}}

reconstruction algorithms is evaluated using data collected in proton--proton collisions in 2015 and 2016 at a centre-of-mass energy of

13

TeV. Results are shown for a data sample corresponding to an integrated luminosity of

36~

fb

^{-1}

. The performance of

E_{\text{T}}^{\text{miss}}

built with jets reconstructed using a particle flow algorithm is presented and compared to that built with calorimeter jets. Various strategies are used to suppress effects arising from additional proton--proton interactions, called pileup. The tracking and vertexing information is used to distinguish contributions from pileup entering the

E_{\text{T}}^{\text{miss}}

calculation. The modelling of

E_{\text{T}}^{\text{miss}}

in simulated events containing a

Z

boson decaying to two charged leptons (electrons or muons) is compared to data, and estimates of the systematic uncertainties in the

E_{\text{T}}^{\text{miss}}

measurements are presented.

Note:

Preliminary results

etmiss
MET
ATLAS
performance
2016
2015
p p: colliding beams
ATLAS: performance
muon: spectrometer
transverse momentum: missing-energy

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