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@ARTICLE{Aad:613059,
      author       = {Aad, Georges and others},
      collaboration = {{ATLAS Collaboration}},
      title        = {{A} search for top-squark pair production, in final states
                      containing a top quark, a charm quark and missing transverse
                      momentum, using the 139 fb$^{−1}$ of pp collision data
                      collected by the {ATLAS} detector},
      reportid     = {PUBDB-2024-05528, arXiv:2402.12137. CERN-EP-2023-262},
      year         = {2024},
      note         = {48 pages in total, author list starting page 31, 10
                      figures, 5 tables, submitted to Journal of High Energy
                      Physics. All figures including auxiliary figures are
                      available at
                      https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2019-23/},
      abstract     = {This paper presents a search for top-squark pair production
                      in final states with a top quark, a charm quark and missing
                      transverse momentum. The data were collected with the ATLAS
                      detector during LHC Run 2 and correspond to an integrated
                      luminosity of 139 fb$^{−1}$ of proton-proton collisions at
                      a centre-of-mass energy of $ \sqrt{s} $ = 13 TeV. The
                      analysis is motivated by an extended Minimal Supersymmetric
                      Standard Model featuring a non-minimal flavour violation in
                      the second- and third-generation squark sector. The top
                      squark in this model has two possible decay modes, either $
                      {\tilde{t}}_1\to c{\overset{\sim }{\chi}}_1^0 $ or $
                      {\tilde{t}}_1\to t{\overset{\sim }{\chi}}_1^0 $, where the $
                      {\overset{\sim }{\chi}}_1^0 $ is undetected. The analysis is
                      optimised assuming that both of the decay modes are equally
                      probable, leading to the most likely final state of $
                      tc+{E}_T^{\textrm{miss}} $. Good agreement is found between
                      the Standard Model expectation and the data in the search
                      regions. Exclusion limits at 95\% CL are obtained in the $
                      m\left({\tilde{t}}_1\right) $ vs. $ m\left({\overset{\sim
                      }{\chi}}_1^0\right) $ plane and, in addition, limits on the
                      branching ratio of the $ {\tilde{t}}_1\to t{\overset{\sim
                      }{\chi}}_1^0 $ decay as a function of m($ {\tilde{t}}_1 $)
                      are also produced. Top-squark masses of up to 800 GeV are
                      excluded for scenarios with light neutralinos, and
                      top-squark masses up to 600 GeV are excluded in scenarios
                      where the neutralino and the top squark are almost mass
                      degenerate.[graphic not available: see fulltext]},
      keywords     = {p p: colliding beams (INSPIRE) / transverse momentum:
                      missing-energy (INSPIRE) / p p: scattering (INSPIRE) /
                      flavor: violation (INSPIRE) / family: 3 (INSPIRE) / squark:
                      pair production (INSPIRE) / stop: pair production (INSPIRE)
                      / neutralino: mass: lower limit (INSPIRE) / stop: decay
                      modes (INSPIRE) / supersymmetry: parameter space (INSPIRE) /
                      ATLAS (INSPIRE) / charm: particle identification (INSPIRE) /
                      stop: branching ratio: upper limit (INSPIRE) / mass
                      dependence (INSPIRE) / minimal supersymmetric standard model
                      (INSPIRE) / CERN LHC Coll (INSPIRE) / nonminimal (INSPIRE) /
                      stop: mass: lower limit (INSPIRE) / experimental results
                      (INSPIRE) / 13000 GeV-cms (INSPIRE) / Beyond Standard Model
                      (autogen) / Hadron-Hadron Scattering (autogen) /
                      Supersymmetry (autogen)},
      cin          = {ATLAS},
      ddc          = {530},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2402.12137},
      howpublished = {arXiv:2402.12137},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2402.12137;\%\%$},
      doi          = {10.3204/PUBDB-2024-05528},
      url          = {https://bib-pubdb1.desy.de/record/613059},
}