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Conference Paper

The Future of Neutrinoless Double Beta Decay Searches with Germanium Detectors

MPS-Authors

The LEGEND Collaboration, 
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Edzards,  F.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

The LEGEND Collaboration, & Edzards, F. (2020). The Future of Neutrinoless Double Beta Decay Searches with Germanium Detectors. Journal of Physics: Conference Series, 1690, 012180.


Cite as: https://hdl.handle.net/21.11116/0000-0008-1BBF-4
Abstract
The observation of neutrinoless double beta (0vββ) decay would establish the Majorana nature of neutrinos and explicitly show that lepton number conservation is violated. In their search for the rare decay in the isotope 76Ge, the GERDA and MAJORANA DEMONSTRATOR (MJD) experiments have achieved the lowest backgrounds and best energy resolutions in the signal region of interest of any 0vββ decay experiment. Building on the successful results of these experiments, as well as contributions from other groups, the Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND) collaboration aims to develop a phased 0vββ decay experimental program with discovery potential at a half-life beyond 1028 years. To achieve this goal, the enriched germanium detector mass has to be increased up to the tonne-scale and the backgrounds have to be reduced further. The first phase of LEGEND, a 200 kg measurement utilizing the existing GERDA infrastructure at LNGS in Italy, is expected to start in 2021.