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@MASTERSTHESIS{Bakhishova:625748,
      author       = {Bakhishova, Elnura},
      othercontributors = {Blekman, Freya and Alimena, Juliette},
      title        = {{L}ong-{L}ived {A}xion-{L}ike {P}articles at the {F}uture
                      {C}ircular {E}lectron-{P}ositron {C}ollider},
      school       = {Universität Hamburg},
      type         = {Bachelorarbeit},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron DESY},
      reportid     = {PUBDB-2025-01195, DESY-THESIS-2025-007},
      series       = {DESY-THESIS},
      pages        = {51},
      year         = {2025},
      note         = {Bachelorarbeit, Universität Hamburg, 2025},
      abstract     = {As the leading theory in particle physics, the Standard
                      Model (SM) defines our understanding of the subatomic world.
                      However, observed phenomena have proven that the SM, despite
                      its great success, is not complete yet and the search for
                      particles Beyond the Standard Model (BSM) has surged ever
                      since. In models that try to address the problems of the SM,
                      BSM long-lived particles (LLPs), which have longer lifetimes
                      than unstable SM particles, occur naturally. With a proposed
                      circular electron-positron collider, the FCC-ee, these BSM
                      LLPs could be discovered.This thesis focuses specifically on
                      the production and detection of long-lived axion-like
                      particles (ALPs), which are well-motivated BSM particles and
                      also possible dark matter candidates. Utilizing the e+e−
                      → Z → aγ → γγγ channel, which only depends on the
                      ALP-photon coupling cγγ under certain assumptions, the
                      sensitivity of the FCC-ee to detect ALPs is examined.
                      Employing the analysis framework of the Future Circular
                      Collider (FCC), the simulation and analysis of events for
                      ALP production were conducted, testing coupling constants
                      ranging from 10−6 to 1.6 and ALP masses between 0.01 GeV
                      and 30 GeV. Finally, the sensitivity of the FCC-ee to a
                      long-lived ALP signature is studied for various settings of
                      the ALP parameters.},
      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)2},
      doi          = {10.3204/PUBDB-2025-01195},
      url          = {https://bib-pubdb1.desy.de/record/625748},
}