November 16, 2022 Master Thesis Open Access

Verstege, Cedric

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        "affiliation": "KIT/ETP", 
        "name": "Verstege, Cedric"
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    "description": "<p>For understanding and interpreting particle interactions at hadron colliders, the description of the hadrons&rsquo; constituents is essential, since hadrons are not fundamental particles. The constituents of a hadron, the partons, each carry a different momentum fraction of the total hadron. These momentum fractions are described by the so-called parton distribution functions (PDFs). Due to the factorization theorem of Quantum Chromodynamics (QCD), the PDFs are the same for all scattering processes.</p>\n\n<p>Multiple different production channels are expected to improve the precision of the experimentally obtained PDFs, including vector boson production in association with a jet. The presented analysis covers this crucial ingredient in the context of the Z boson production with at least one jet. A triple differential measurement provides an insight into the different contributions from the proton&rsquo;s constituents to the Z+jet production in different regions of the analyzed phase space.</p>\n\n<p>The triple-differential inclusive cross-section is measured as a function of three different kinematic variables, namely the transverse momentum of the Z boson, the difference in rapidity between the Z boson and the jet, as well as the boost of the center-of-mass system. Those variables allow for a suitable division of the phase space in order to obtain a better sensitivity to the partonic sub-processes and the initial state parton momenta. The presented measurement is expected to contribute to a more precise determination of the PDFs, especially the gluon PDF.</p>", 
    "keywords": [
      "CMS", 
      "PDF", 
      "Analysis", 
      "Jets", 
      "Z boson", 
      "Muon"
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    "language": "eng", 
    "publication_date": "2022-11-16", 
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    "resource_type": {
      "subtype": "master-thesis", 
      "title": "Master Thesis", 
      "type": "thesis"
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    "thesis": {
      "report_number": "ETP-KA/2022-16", 
      "supervisors": [
        {
          "affiliation": "KIT/ETP", 
          "name": "Rabbertz, Klaus"
        }, 
        {
          "affiliation": "KIT/ETP", 
          "name": "Quast, G\u00fcnter"
        }
      ]
    }, 
    "title": "Measurement of the Triple-Differential Cross-Section of Z+Jet Production with the CMS Detector at 13 TeV"
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