Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 80, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-020-7907-9
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Funding
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- CFI, Canada
- CONICYT, Chile
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- IN2P3-CNRS, France
- CEA-DRF/IRFU, France
- BMBF, Germany
- MPG, Germany
- GSRT, Greece
- RGC, China
- ISF, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- NRC KI, Russia Federation
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SNSF Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- DOE, United States of America
- NSF, United States of America
- BCKDF, Canada
- CANARIE, Canada
- CRC, Canada
- ERC
- ERDF
- European Union
- Investissements d'Avenir Labex, Investissements d'Avenir Idex
- ANR, France
- DFG
- Greek NSRF, Greece
- BSF-NSF
- GIF, Israel
- CERCA Programme Generalitat de Catalunya
- PROMETEO Programme Generalitat Valenciana, Spain
- Goran Gustafssons Stiftelse, Sweden
- Royal Society
- Leverhulme Trust, United Kingdom
- NRC, Canada
- CERN
- CAS, China
- MOST, China
- SRNSFG, Georgia
- HGF, Germany
- Hong Kong SAR, China
- NWO, Netherlands
- MES of Russia
- JINR
- DST/NRF, South Africa
- SERI Geneva, Switzerland
- Cantons of Bern and Geneva, Switzerland
- Compute Canada, Canada
- Horizon 2020
- Marie Sklodowska-Curie Actions
- COST
- AvH Foundation, Germany
- EU-ESF
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The inclusive top quark pair (tt) production cross-section sigma tt has been measured in proton-proton collisions at s=13TeV, using 36.1 fb-1 of data collected in 2015-2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge e mu pair and b-tagged jets, the cross-section is measured to be: sigma tt=826.4 +/- 3.6(stat)+/- 11.5(syst)+/- 15.7(lumi)+/- 1.9(beam)pb,where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the LHC beam energy, giving a total uncertainty of 2.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. It is used to determine the top quark pole mass via the dependence of the predicted cross-section on mtpole, giving mtpole=173.1-2.1+2.0GeV. It is also combined with measurements at s=7TeV and s=8TeV to derive ratios and double ratios of tt and Z cross-sections at different energies. The same event sample is used to measure absolute and normalised differential cross-sections as functions of single-lepton and dilepton kinematic variables, and the results are compared with predictions from various Monte Carlo event generators.
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