Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in √s=8 TeV proton-proton collisions using the ATLAS detector
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Measurement of the differential.pdf
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Author(s)
ATLAS Collaboration
Taylor, Frank E
Date Issued
February 2016
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aad, G. et al. "Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in √s=8 TeV proton-proton collisions using the ATLAS detector." Physical Review D 93, 3 (February 2016): 032009 © 2016 CERN, for the ATLAS Collaboration
Version
Final published version
Abstract
The differential cross-section for pair production of top quarks with high transverse momentum is measured in 20.3 fb[superscript −1] of proton-proton collisions at a center-of-mass energy of 8 TeV. The measurement is performed for t[t with a line over it] events in the lepton+jets channel. The cross-section is reported as a function of the hadronically decaying top quark transverse momentum for values above 300 GeV. The hadronically decaying top quark is reconstructed as an anti-k[subscript t] jet with radius parameter R=1.0 and identified with jet substructure techniques. The observed yield is corrected for detector effects to obtain a cross-section at particle level in a fiducial region close to the event selection. A parton-level cross-section extrapolated to the full phase space is also reported for top quarks with transverse momentum above 300 GeV. The predictions of a majority of next-to-leading-order and leading-order matrix-element Monte Carlo generators are found to agree with the measured cross-sections.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.93.032009
