TY - JOUR
T1 - Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV
AU - Aad, G.
AU - Abbott, B.
AU - Abdallah, J.
AU - Abdelalim, A. A.
AU - Kabana, S.
AU - ATLAS Collaboration
N1 - Publisher Copyright:
© CERN for the benefit of the ATLAS collaboration 2011.
PY - 2011
Y1 - 2011
N2 - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.
AB - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.
UR - https://www.scopus.com/pages/publications/84876438744
U2 - 10.1140/epjc/s10052-011-1577-6
DO - 10.1140/epjc/s10052-011-1577-6
M3 - Article
AN - SCOPUS:84876438744
SN - 1434-6044
VL - 71
JO - European Physical Journal C
JF - European Physical Journal C
IS - 3
M1 - 1577
ER -