Double beta decay and the quest for Majorana neutrinos
Kotila, J. (2020). Double beta decay and the quest for Majorana neutrinos. In INPC2019 : 27th International Nuclear Physics Conference (Article 012023). Institute of Physics. Journal of Physics : Conference Series, 1643. https://doi.org/10.1088/1742-6596/1643/1/012023
Published inJournal of Physics : Conference Series
© Authors, 2020
The observation of neutrinoless double beta (0νββ) decay remains crucial for understanding lepton number violation. The inverse half-life for 0νββ-decay is given by the product of a phase space factor (PSF), a nuclear matrix element (NME), which both rely on theoretical description, and a function f containing the physics beyond the standard model. Phase space factors and nuclear matrix elements have been evaluated, or are under evaluation, systematically for all processes of interest. The nuclear matrix elements have been calculated within the framework of the microscopic interacting boson model (IBM-2), and phase space factors have been evaluated using exact Dirac electron wave functions. The current situation is then discussed by combining the theoretical results with experimental limits on the half-life of neutrinoless double beta decay. The extracted limits on the average light neutrino mass are addressed, complemented with a discussion of other possible 0νββ-decay mechanisms and scenarios. ...
PublisherInstitute of Physics
ConferenceInternational Nuclear Physics Conference
Is part of publicationINPC2019 : 27th International Nuclear Physics Conference
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Research post as Academy Research Fellow, AoF; Research costs of Academy Research Fellow, AoF
Additional information about fundingThis work was supported by the Academy of Finland(Grant Nos. 314733, 320062)
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