The inclusive and fiducial production cross-sections are measured in the lepton+jets channel using of proton–proton collision data at a centre-of-mass 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 process is modelled using Z+ jets events in a data-driven approach. The inclusive cross-section is measured with a precision of 5.7% to be , assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The cross-section is also measured in a phase space close to that of the selected data. The fiducial cross-section is with a precision of 4.5%.
Aaboud, M., et al. "Measurement of the inclusive and fiducial <math xmlns="http://www.w3.org/1998/Math/MathML"> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi>t</mi> <mo stretchy="false">¯<!-- ¯ --></mo> </mover> </mrow> </math> production cross-sections in the lepton+jets channel in <em>pp</em> collisions at <math xmlns="http://www.w3.org/1998/Math/MathML"> <msqrt> <mi>s</mi> </msqrt> <mo>=</mo> <mn>8</mn> <mtext> </mtext> <mstyle displaystyle="false" scriptlevel="0"> <mtext>TeV</mtext> </mstyle> </math> with the ATLAS detector." European Physical Journal. C, Particles and Fields, vol. 78, no. 6, Jun. 2018. https://doi.org/10.1140/epjc/s10052-018-5904-z
Aaboud, M., Aad, G., Abbott, B., et al., "Measurement of the inclusive and fiducial <math xmlns="http://www.w3.org/1998/Math/MathML"> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi>t</mi> <mo stretchy="false">¯<!-- ¯ --></mo> </mover> </mrow> </math> production cross-sections in the lepton+jets channel in <em>pp</em> collisions at <math xmlns="http://www.w3.org/1998/Math/MathML"> <msqrt> <mi>s</mi> </msqrt> <mo>=</mo> <mn>8</mn> <mtext> </mtext> <mstyle displaystyle="false" scriptlevel="0"> <mtext>TeV</mtext> </mstyle> </math> with the ATLAS detector," European Physical Journal. C, Particles and Fields 78, no. 6 (2018), https://doi.org/10.1140/epjc/s10052-018-5904-z
@article{osti_1457778,
author = {Aaboud, M. and Aad, G. and Abbott, B. and Abdinov, O. and Abeloos, B. and Abidi, S. H. and AbouZeid, O. S. and Abraham, N. L. and Abramowicz, H. and Abreu, H. and others},
title = {Measurement of the inclusive and fiducial <math xmlns="http://www.w3.org/1998/Math/MathML"> <mi>t</mi> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi>t</mi> <mo stretchy="false">¯<!-- ¯ --></mo> </mover> </mrow> </math> production cross-sections in the lepton+jets channel in <em>pp</em> collisions at <math xmlns="http://www.w3.org/1998/Math/MathML"> <msqrt> <mi>s</mi> </msqrt> <mo>=</mo> <mn>8</mn> <mtext> </mtext> <mstyle displaystyle="false" scriptlevel="0"> <mtext>TeV</mtext> </mstyle> </math> with the ATLAS detector},
annote = {The inclusive and fiducial t t ¯ production cross-sections are measured in the lepton+jets channel using 20.2   fb − 1 of proton–proton collision data at a centre-of-mass 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 σ inc ( t t ¯ ) = 248.3 ± 0.7 ( s t a t . ) ± 13.4 ( s y s t . ) ± 4.7 ( l u m i . )   pb , assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The cross-section is also measured in a phase space close to that of the selected data. The fiducial cross-section is σ fid ( t t ¯ ) = 48.8 ± 0.1 ( s t a t . ) ± 2.0 ( s y s t . ) ± 0.9 ( l u m i . )   pb with a precision of 4.5%.},
doi = {10.1140/epjc/s10052-018-5904-z},
url = {https://www.osti.gov/biblio/1457778},
journal = {European Physical Journal. C, Particles and Fields},
issn = {ISSN 1434-6044},
number = {6},
volume = {78},
place = {United States},
publisher = {Springer},
year = {2018},
month = {06}}
Brookhaven National Laboratory (BNL), Upton, NY (United States); Harvard Univ., Cambridge, MA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Science (SC), High Energy Physics (HEP)
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3https://doi.org/10.1016/S0168-9002(03)01368-8
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 559, Issue 1https://doi.org/10.1016/j.nima.2005.11.166