Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton + jets final state with ATLAS
Author(s)Taylor, Frank E.
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A measurement is presented of the t[bar over t] inclusive production cross section in pp collisions at a center-of-mass energy of √s = 8 TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement was performed in the lepton + jets final state using a data set corresponding to an integrated luminosity of 20.3 fb[superscript −1]. The cross section was obtained using a likelihood discriminant fit and b-jet identification was used to improve the signal-to-background ratio. The inclusive t[bar over t] production cross section was measured to be 260 ± 1(stat)[+22 over −23](stat) ± 8(lumi) ± 4(beam) pb assuming a top-quark mass of 172.5 GeV, in good agreement with the theoretical prediction of 253[+13 over −15] pb. The t[bar over t] → (e,μ) + jets production cross section in the fiducial region determined by the detector acceptance is also reported.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review D
American Physical Society
Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Measurement of the Top Pair Production Cross Section in 8 TeV Proton-Proton Collisions Using Kinematic Information in the Lepton + Jets Final State with ATLAS.” Phys. Rev. D 91, no. 11 (June 2015). © 2015 CERN, for the ATLAS Collaboration
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