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Neutrinoloser Doppelbeta-Zerfall : Untersuchung einer Methode zur Auswahl eines Nuklearen Matrix-Elements

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons101532

Bleher,  Michael
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Bleher, M. (2013). Neutrinoloser Doppelbeta-Zerfall: Untersuchung einer Methode zur Auswahl eines Nuklearen Matrix-Elements. Bachelor Thesis, Ruprecht-Karls-Universität, Heidelberg.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-48A8-2
Zusammenfassung
In this work a review on neutrino physics in the standard model and its extensions for massive neutrinos is given. The differences of Dirac- and Majorana-Neutrinos is discussed and further topics like neutrino oscillation, see-saw-mechanism and neutrinoless double beta-decay (0-decay) are mentioned. A method is presented which will allow to experimentally check and disfavour some nuclear matrix elements (NME). It is based on the half-life ratio RN1 N2 = T1/2(N1) / T1/2(N2). The more half-lifes one compares, the more likely one will be able to choose a single NME. Besides it will be possible to investigate the effect of quenching the axial-vector-coupling gA in 0-decay, if at least three half-lifes are determined. Finally the method is examined in case that some alternative mechanisms contribute to the transition amplitude.