Performance of algorithms that reconstruct missing transverse momentum in √<i>s</i>=8 TeV proton-proton collisions in the ATLAS detector



Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abolins, M, AbouZeid, OS, Abrarnowicz, H, Abreu, H
et al (show 2814 more authors) (2017) Performance of algorithms that reconstruct missing transverse momentum in √<i>s</i>=8 TeV proton-proton collisions in the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 77 (4). 241-.

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Abstract

The reconstruction and calibration algorithms used to calculate missing transverse momentum ([Formula: see text] ) with the ATLAS detector exploit energy deposits in the calorimeter and tracks reconstructed in the inner detector as well as the muon spectrometer. Various strategies are used to suppress effects arising from additional proton-proton interactions, called pileup, concurrent with the hard-scatter processes. Tracking information is used to distinguish contributions from the pileup interactions using their vertex separation along the beam axis. The performance of the [Formula: see text] reconstruction algorithms, especially with respect to the amount of pileup, is evaluated using data collected in proton-proton collisions at a centre-of-mass energy of 8 [Formula: see text] during 2012, and results are shown for a data sample corresponding to an integrated luminosity of [Formula: see text]. The simulation and modelling of [Formula: see text]  in events containing a <i>Z</i> boson decaying to two charged leptons (electrons or muons) or a <i>W</i> boson decaying to a charged lepton and a neutrino are compared to data. The acceptance for different event topologies, with and without high transverse momentum neutrinos, is shown for a range of threshold criteria for [Formula: see text] , and estimates of the systematic uncertainties in the [Formula: see text]  measurements are presented.

Item Type: Article
Additional Information: 69 pages in total, author list starting page 53, 26 figures, 6 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2014-04/
Uncontrolled Keywords: ATLAS Collaboration, ATLAS Collaboration, ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 08 May 2017 07:45
Last Modified: 05 Oct 2023 12:13
DOI: 10.1140/epjc/s10052-017-4780-2
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007284