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@PHDTHESIS{Belvedere:641872,
      author       = {Belvedere, Alberto},
      othercontributors = {Lipka, Katerina and Kogler, Roman},
      title        = {{S}ingle top production in association with a {WZ} boson
                      pair at the {CMS} experiment},
      school       = {Bergische Universität Wuppertal},
      type         = {Dissertation},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron DESY},
      reportid     = {PUBDB-2025-05224, DESY-THESIS-2025-021},
      series       = {DESY-THESIS},
      pages        = {233},
      year         = {2025},
      note         = {Dissertation, Bergische Universität Wuppertal, 2025},
      abstract     = {This thesis presents a comprehensive study of the single
                      top quark production in association with a WZ boson pair
                      (tWZ), culminating in the first observation of this process.
                      Measurements of rare processes are crucial to improve our
                      understanding of the Standard Model (SM) and improve the
                      sensitivity to loop-induced new physics. These represent a
                      crucial part of the Large Hadron Collider (LHC) physics
                      program. In this context, the tWZ process provides a unique
                      probe of the top quark-electroweak sector of the SM and
                      offers sensitivity to possible effects of new physics, which
                      can be systematically studied within the Standard Model
                      Effective Field Theory (SMEFT) framework. This thesis
                      addresses the challenges associated with the computation of
                      SMEFT predictions and uses them to measure constraints on
                      the Wilson coefficients of relevant SMEFT operators, also
                      providing their projections for the High-Luminosity LHC. A
                      measurement of the inclusive tWZ production cross section is
                      performed using proton-proton collisions recorded by the CMS
                      experiment at centre-of-mass energies of 13 and 13.6 TeV,
                      corresponding to an integrated luminosity of 200 fb−1. The
                      analysis tackles several experimental challenges, for
                      example an efficient identification of the tWZ process with
                      machine learning, and a precise prediction of the background
                      from misidentified leptons. The inclusive tWZ cross section
                      is measured independently at 13 and 13.6 TeV, and a
                      simultaneous fit yields an observed statistical significance
                      exceeding 5 standard deviations, thus establishing the first
                      observation of the tWZ process.},
      cin          = {CMS},
      cid          = {I:(DE-H253)CMS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      doi          = {10.3204/PUBDB-2025-05224},
      url          = {https://bib-pubdb1.desy.de/record/641872},
}