@misc{10481/54801,
year = {2018},
url = {http://hdl.handle.net/10481/54801},
abstract = {The inclusive and fiducial t ¯t production crosssections
are measured in the lepton+jets channel using
20.2 fb−1 of proton–proton collision data at a centre-ofmass
energy of 8 TeV recorded with the ATLAS detector
at the LHC. Major systematic uncertainties due to the modelling
of the jet energy scale and b-tagging efficiency are
constrained by separating selected events into three disjoint
regions. In order to reduce systematic uncertainties in the
most important background, the W+jets process is modelled
using Z+jets events in a data-driven approach. The inclusive
t ¯t cross-section is measured with a precision of 5.7% to be
σinc(t ¯t) = 248.3±0.7 (stat.)±13.4 (syst.)±4.7 (lumi.) pb,
assuming a top-quark mass of 172.5 GeV. The result is in
agreement with the Standard Model prediction. The crosssection
is also measured in a phase space close to that of
the selected data. The fiducial cross-section is σfid(t ¯t) =
48.8±0.1 (stat.)±2.0 (syst.)±0.9 (lumi.) pb with a precision
of 4.5%.},
organization = {Funded by SCOAP3},
publisher = {Springer International Publishing},
title = {Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √ s = 8 TeV with the ATLAS detector},
author = {Aguilar Saavedra, Juan Antonio and Atlas Collaboration},
}