Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, O. S. AbouZeid, N. L. Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B. S. Acharya, S. Adachi, L. Adamczyk, D. L. Adams, J. Adelman, S. Adomeit, T. Adye, A. A. Affolder & 31 others T. Agatonovic-Jovin, J. A. Aguilar-Saavedra, S. P. Ahlen, F. Ahmadov, G. Aielli, H. Akerstedt, T. P.A. Åkesson, A. V. Akimov, G. L. Alberghi, J. Albert, S. Albrand, M. J. Alconada Verzini, M. Aleksa, I. N. Aleksandrov, C. Alexa, G. Alexander, T. Alexopoulos, M. Alhroob, B. Ali, M. Aliev, G. Alimonti, J. Alison, S. P. Alkire, B. M.M. Allbrooke, B. W. Allen, P. P. Allport, K. Cranmer, A. Haas, A. I. Mincer, P. Nemethy, ATLAS Collaboration

    Research output: Contribution to journalArticle

    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 s = 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 ET= 15 GeV and 99% at ET= 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.

    Original languageEnglish (US)
    Article number195
    JournalEuropean Physical Journal C
    Volume77
    Issue number3
    DOIs
    StatePublished - Mar 1 2017

    Fingerprint

    Colliding beam accelerators
    Detectors
    collisions
    Electrons
    detectors
    electrons
    Hadrons
    transverse momentum
    hadrons
    rejection
    Luminance
    Momentum
    luminosity
    decay

    ASJC Scopus subject areas

    • Engineering (miscellaneous)
    • Physics and Astronomy (miscellaneous)

    Cite this

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., ... ATLAS Collaboration (2017). Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data. European Physical Journal C, 77(3), [195]. https://doi.org/10.1140/epjc/s10052-017-4756-2

    Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data. / Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; AbouZeid, O. S.; Abraham, N. L.; Abramowicz, H.; Abreu, H.; Abreu, R.; Abulaiti, Y.; Acharya, B. S.; Adachi, S.; Adamczyk, L.; Adams, D. L.; Adelman, J.; Adomeit, S.; Adye, T.; Affolder, A. A.; Agatonovic-Jovin, T.; Aguilar-Saavedra, J. A.; Ahlen, S. P.; Ahmadov, F.; Aielli, G.; Akerstedt, H.; Åkesson, T. P.A.; Akimov, A. V.; Alberghi, G. L.; Albert, J.; Albrand, S.; Alconada Verzini, M. J.; Aleksa, M.; Aleksandrov, I. N.; Alexa, C.; Alexander, G.; Alexopoulos, T.; Alhroob, M.; Ali, B.; Aliev, M.; Alimonti, G.; Alison, J.; Alkire, S. P.; Allbrooke, B. M.M.; Allen, B. W.; Allport, P. P.; Cranmer, K.; Haas, A.; Mincer, A. I.; Nemethy, P.; ATLAS Collaboration.

    In: European Physical Journal C, Vol. 77, No. 3, 195, 01.03.2017.

    Research output: Contribution to journalArticle

    Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, BS, Adachi, S, Adamczyk, L, Adams, DL, Adelman, J, Adomeit, S, Adye, T, Affolder, AA, Agatonovic-Jovin, T, Aguilar-Saavedra, JA, Ahlen, SP, Ahmadov, F, Aielli, G, Akerstedt, H, Åkesson, TPA, Akimov, AV, Alberghi, GL, Albert, J, Albrand, S, Alconada Verzini, MJ, Aleksa, M, Aleksandrov, IN, Alexa, C, Alexander, G, Alexopoulos, T, Alhroob, M, Ali, B, Aliev, M, Alimonti, G, Alison, J, Alkire, SP, Allbrooke, BMM, Allen, BW, Allport, PP, Cranmer, K, Haas, A, Mincer, AI, Nemethy, P & ATLAS Collaboration 2017, 'Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data', European Physical Journal C, vol. 77, no. 3, 195. https://doi.org/10.1140/epjc/s10052-017-4756-2
    Aaboud, M. ; Aad, G. ; Abbott, B. ; Abdallah, J. ; Abdinov, O. ; Abeloos, B. ; AbouZeid, O. S. ; Abraham, N. L. ; Abramowicz, H. ; Abreu, H. ; Abreu, R. ; Abulaiti, Y. ; Acharya, B. S. ; Adachi, S. ; Adamczyk, L. ; Adams, D. L. ; Adelman, J. ; Adomeit, S. ; Adye, T. ; Affolder, A. A. ; Agatonovic-Jovin, T. ; Aguilar-Saavedra, J. A. ; Ahlen, S. P. ; Ahmadov, F. ; Aielli, G. ; Akerstedt, H. ; Åkesson, T. P.A. ; Akimov, A. V. ; Alberghi, G. L. ; Albert, J. ; Albrand, S. ; Alconada Verzini, M. J. ; Aleksa, M. ; Aleksandrov, I. N. ; Alexa, C. ; Alexander, G. ; Alexopoulos, T. ; Alhroob, M. ; Ali, B. ; Aliev, M. ; Alimonti, G. ; Alison, J. ; Alkire, S. P. ; Allbrooke, B. M.M. ; Allen, B. W. ; Allport, P. P. ; Cranmer, K. ; Haas, A. ; Mincer, A. I. ; Nemethy, P. ; ATLAS Collaboration. / Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data. In: European Physical Journal C. 2017 ; Vol. 77, No. 3.
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    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 s = 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 ET= 15 GeV and 99{\%} at ET= 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.",
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    AU - Aaboud, M.

    AU - Aad, G.

    AU - Abbott, B.

    AU - Abdallah, J.

    AU - Abdinov, O.

    AU - Abeloos, B.

    AU - AbouZeid, O. S.

    AU - Abraham, N. L.

    AU - Abramowicz, H.

    AU - Abreu, H.

    AU - Abreu, R.

    AU - Abulaiti, Y.

    AU - Acharya, B. S.

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    AU - Adamczyk, L.

    AU - Adams, D. L.

    AU - Adelman, J.

    AU - Adomeit, S.

    AU - Adye, T.

    AU - Affolder, A. A.

    AU - Agatonovic-Jovin, T.

    AU - Aguilar-Saavedra, J. A.

    AU - Ahlen, S. P.

    AU - Ahmadov, F.

    AU - Aielli, G.

    AU - Akerstedt, H.

    AU - Åkesson, T. P.A.

    AU - Akimov, A. V.

    AU - Alberghi, G. L.

    AU - Albert, J.

    AU - Albrand, S.

    AU - Alconada Verzini, M. J.

    AU - Aleksa, M.

    AU - Aleksandrov, I. N.

    AU - Alexa, C.

    AU - Alexander, G.

    AU - Alexopoulos, T.

    AU - Alhroob, M.

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    AU - Aliev, M.

    AU - Alimonti, G.

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    AB - 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 s = 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 ET= 15 GeV and 99% at ET= 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.

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