Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel.

Aad, G and Abbott, B. and Abdallah, J. and Abdelalim, A .A. and Abdesselam, A. and Abdinov, O. and Abi, B. and Abolins, M. and Bell, William, The ATLAS collaboration (2012) Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel. Physics Letters B, 711 (3-4). pp. 244-263. ISSN 0370-2693

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    Abstract

    A measurement of the production cross-section for top quark pairs (t tbar) in pp collisions at sqrt{s} = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35/pb, two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of sigma (t tbar) = 187 +/- 11 (stat.) +18-17 (syst.) +/- 6 (lumi.) pb and sigma (t tbar) = 173 +/- 17 (stat.) +18-16 (syst.) +/- 6 (lumi.) pb} respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter.

    Creators(s): Aad, G, Abbott, B., Abdallah, J., Abdelalim, A .A., Abdesselam, A., Abdinov, O., Abi, B., Abolins, M. and Bell, William ORCID logoORCID: https://orcid.org/0000-0002-0138-8639; The ATLAS collaboration;
    Item type:Article
    ID code:73737
    Keywords:high-energy collider experiment, cross-section, Large Hadron Collider (LHC), Physics, Nuclear and High Energy Physics
    Subjects:Science > Physics
    Department:Faculty of Science > Computer and Information Sciences
    Depositing user: Pure Administrator
    Date deposited:27 Aug 2020 13:24
    Last modified:01 Jan 2021 13:49
    URI:https://strathprints.strath.ac.uk/id/eprint/73737
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