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@ARTICLE{Aad:600304,
      author       = {Aad, Georges and others},
      collaboration = {{ATLAS Collaboration}},
      title        = {{M}easurement of the $t\bar{t}$ cross section and its ratio
                      to the {Z} production cross section using pp collisions at
                      $\sqrt{s}$ = 13.6 {T}e{V} with the {ATLAS} detector},
      journal      = {Physics letters / B},
      volume       = {848},
      issn         = {0370-2693},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ.},
      reportid     = {PUBDB-2023-07872, arXiv:2308.09529. CERN-EP-2023-166},
      pages        = {138376},
      year         = {2023},
      note         = {Phys. Let. B 848 (2024) 138376. All figures including
                      auxiliary figures are available at
                      https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2023-21/},
      abstract     = {The inclusive top-quark-pair production cross section
                      $σ_{t\bar{t}}$ and its ratio to the Z-boson production
                      cross section have been measured in proton–proton
                      collisions at $\sqrt{s}$ = 13.6 TeV, using 29 fb$^{−1}$ of
                      data collected in 2022 with the ATLAS experiment at the
                      Large Hadron Collider. Using events with an opposite-charge
                      electron-muon pair and b-tagged jets, and assuming Standard
                      Model decays, the top-quark-pair production cross section is
                      measured to be $σ_{t\bar{t}}$ =
                      850±3(stat.)±18(syst.)±20(lumi.) pb. The ratio of the
                      $t\bar{t}$ and the Z-boson production cross sections is also
                      measured, where the Z-boson contribution is determined for
                      inclusive $e^+e^−$ and $μ^+μ^−$ events in a fiducial
                      phase space. The relative uncertainty on the ratio is
                      reduced compared to the $t\bar{t}$ cross section, thanks to
                      the cancellation of several systematic uncertainties. The
                      result for the ratio,
                      $R_{t\bar{t}}$/Z=1.145±0.003(stat.)±0.021(syst.)±0.002(lumi.)
                      is consistent with the Standard Model prediction using the
                      PDF4LHC21 PDF set.},
      keywords     = {p p: colliding beams (INSPIRE) / top: pair production
                      (INSPIRE) / p p: scattering (INSPIRE) / top: leptonic decay
                      (INSPIRE) / final state: ((n)jet dilepton) (INSPIRE) /
                      channel cross section: measured (INSPIRE) / cross section:
                      ratio: measured (INSPIRE) / Z0: leptonic decay (INSPIRE) /
                      electron: pair production (INSPIRE) / muon: pair production
                      (INSPIRE) / jet: bottom (INSPIRE) / bottom: particle
                      identification (INSPIRE) / ATLAS (INSPIRE) / CERN LHC Coll
                      (INSPIRE) / phase space (INSPIRE) / experimental results
                      (INSPIRE) / 13600 GeV-cms (INSPIRE)},
      cin          = {ATLAS},
      ddc          = {530},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2308.09529},
      howpublished = {arXiv:2308.09529},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2308.09529;\%\%$},
      doi          = {10.1016/j.physletb.2023.138376},
      url          = {https://bib-pubdb1.desy.de/record/600304},
}