<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model"^^ . "It is evident that the current Standard Model of particle physics fails to decode the enigma of dark matter. \r\nAmongst dark matter candidates, a promising contender is a hypothetical fifth-force coupling between atom constituents, which is key to establishing a New Physics (NP) model. \r\nTo prove its existence, isotope shifts are investigated with the King plot method to detect its coupling effect between neutrons and electrons in an atom.\r\nAlthough this effect is weak, it may be resolved with quantum logic spectroscopy of highly charged ions, which offers high precision measurements of isotope shifts, but this method requires ground-state transitions. \r\n\r\nIn this thesis, I measured ground-state transitions in isotope-rich elements, Ca and Xe, using an electron beam ion trap. Furthermore, I theoretically investigated these transitions in their sensitivity to a hypothetical fifth-force, using the generalized King plot method. \r\nMy results predicted an improvement of sensitivity by at least four orders of magnitude, compared to previous King plot analyses. This sensitivity would constrain the NP parameter space more stringently than prior imposed restrictions. \r\n\r\nThis work lays the theoretical foundation of searching for a fifth force and, ultimately, validating an NP model better suited to decipher our universe's mysteries."^^ . "2023" . . . . . . . "Nils-Holger"^^ . "Rehbehn"^^ . "Nils-Holger Rehbehn"^^ . . . . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (PDF)"^^ . . . "PhD_Thesis_Rehbehn.pdf"^^ . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (Other)"^^ . . . . . . "small.jpg"^^ . . . "Measurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #34061 \n\nMeasurement of highly charged Ca and Xe ions and their sensitivity to a hypothetical fifth force beyond the Standard Model\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .