Fiducial, Total and Differential Cross-Section Measurements of T-Channel Single Top-Quark Production in pp Collisions at 8 TeV Using Data Collected by the ATLAS Detector

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Fiducial, Total and Differential Cross-Section Measurements of T-Channel Single Top-Quark Production in pp Collisions at 8 TeV Using Data Collected by the ATLAS Detector

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Title: Fiducial, Total and Differential Cross-Section Measurements of T-Channel Single Top-Quark Production in pp Collisions at 8 TeV Using Data Collected by the ATLAS Detector
Author(s):
Aaboud, M.;
Aad, G.;
Abbott, B.;
Abdallah, J.;
Abdinov, O.;
Abeloos, B.;
AbouZeid, O. S.;
Izen, Joseph M.;
Meirose, Bernhard;
Reeves, Kendall;
Kurth, Matthew G.;
Leyton, Michael;
ATLAS Collaboration
Date Created: 2017-03-27
Item Type: article
Keywords: Show Keywords
Abstract: This paper describes the algorithms for the reconstruction and identification of electrons in the central region of the ATLAS detector at the Large Hadron Collider (LHC). These algorithms were used for all ATLAS results with electrons in the final state that are based on the 2012 pp collision data produced by the LHC at √s̅ = 8 TeV. The efficiency of these algorithms, together with the charge misidentification rate, is measured in data and evaluated in simulated samples using electrons from Z→ ee, Z→ eeγ and J/ ψ→ ee decays. For these efficiency measurements, the full recorded data set, corresponding to an integrated luminosity of 20.3 fb⁻¹, is used. Based on a new reconstruction algorithm used in 2012, the electron reconstruction efficiency is 97% for electrons with E_T= 15 GeV and 99% at E_T= 50 GeV. Combining this with the efficiency of additional selection criteria to reject electrons from background processes or misidentified hadrons, the efficiency to reconstruct and identify electrons at the ATLAS experiment varies from 65 to 95%, depending on the transverse momentum of the electron and background rejection.
Publisher: Springer New York LLC
ISSN: 1434-6044
Source: European Physical Journal C
Link to Related Resource: http://dx.doi.org/10.1140/epjc/s10052-017-4756-2
Persistent Link: http://hdl.handle.net/10735.1/5727
Bibliographic Citation: Aaboud, M., G. Aad, B. Abbott, J. Abdallah, et al. 2017. "Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data." European Physical Journal C 77(3), doi:10.1140/epjc/s10052-017-4756-2
Terms of Use: CC BY 4.0 (Attribution)
©2017 CERN, for the ATLAS Collaboration

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CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)