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000625748 0247_ $$2datacite_doi$$a10.3204/PUBDB-2025-01195
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000625748 1001_ $$0P:(DE-H253)PIP1109939$$aBakhishova, Elnura$$b0$$eCorresponding author$$gfemale
000625748 245__ $$aLong-Lived Axion-Like Particles at the Future Circular Electron-Positron Collider$$f2024-11-01 - 2025-03-27
000625748 260__ $$aHamburg$$bVerlag Deutsches Elektronen-Synchrotron DESY$$c2025
000625748 300__ $$a51
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000625748 502__ $$aBachelorarbeit, Universität Hamburg, 2025$$bBachelorarbeit$$cUniversität Hamburg$$d2025
000625748 520__ $$aAs 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.
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000625748 7001_ $$0P:(DE-H253)PIP1097620$$aBlekman, Freya$$b1$$eThesis advisor$$udesy
000625748 7001_ $$0P:(DE-H253)PIP1103688$$aAlimena, Juliette$$b2$$eThesis advisor$$udesy
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000625748 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1097620$$aDeutsches Elektronen-Synchrotron$$b1$$kDESY
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000625748 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1103688$$aDeutsches Elektronen-Synchrotron$$b2$$kDESY
000625748 9131_ $$0G:(DE-HGF)POF4-611$$1G:(DE-HGF)POF4-610$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMatter and the Universe$$vFundamental Particles and Forces$$x0
000625748 9141_ $$y2025
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