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Analysis of first KATRIN data and searches for keV-scale sterile neutrinos

Huber, Anton

Abstract (englisch):

The phenomenon of neutrino oscillation stands in contradiction with the Standard Model of Particle Physics (SM) where neutrinos are formulated as massless particles. One way to introduce a non-zero neutrino mass to the SM is the so-called see-saw-mechanism. It adds at least one sterile neutrino to the particle framework. A sterile neutrino would not participate in any SM interaction, only interact gravitationally and would be of arbitrary mass-scale. These unique properties make a sterile neutrino an interesting Dark Matter candidate.

The Karlsruhe Tritium Neutrino (KATRIN) experiment aims to determine the effective electron anti-neutrino mass with a sensitvity of $0.2\, \mathrm{eV}/c^{2}$ (90 $\%$ C.L.) by observing the tritium $\beta$-decay close to its kinematic endpoint. Studies show that the experiment can be additionally extended to search for a sterile neutrino, for example on the keV mass-scale.

This thesis specifies how the KATRIN experiment can be operated to search for keV-scale sterile neutrinos without any significant hardware modifications. It presents a first comprehensive overview of all yet known systematic effects that occur in such a measurement. ... mehr

Volltext §
DOI: 10.5445/IR/1000128344
Veröffentlicht am 12.01.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Hochschulschrift
Publikationsdatum 12.01.2021
Sprache Englisch
Identifikator KITopen-ID: 1000128344
HGF-Programm 51.03.01 (POF IV, LK 01) Neutrinophysik
Verlag Karlsruher Institut für Technologie (KIT)
Umfang XI, 207 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Experimentelle Teilchenphysik (ETP)
Prüfungsdatum 10.07.2020
Referent/Betreuer Drexlin, G.
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
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