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The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)

MPG-Autoren
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Caldwell,  Allen
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Hakenmueller,  Janina
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Hinton,  J.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Hofmann,  W.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Zitation

Abgrall, N., Abramov, A., Abrosimov, N., Abt, I., Agostini, M., Agartioglu, M., et al. (2017). The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND). AIP Conference Proceedings, 1894: 020027-1. doi:10.1063/1.5007652.


Zitierlink: https://hdl.handle.net/21.11116/0000-0001-0097-4
Zusammenfassung
The observation of neutrinoless double-beta decay (0 nu beta beta) would show that lepton number is violated, reveal that neutrinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely low backgrounds, at the level of similar to 0.1 count/(FWHM.t.yr) in the region of the signal. The current generation Ge-76 experiments GERDA and the Majorana Demonstrator, utilizing high purity Germanium detectors with an intrinsic energy resolution of 0.12%, have achieved the lowest backgrounds by over an order of magnitude in the 0 nu beta beta signal region of all 0 nu beta beta experiments. Building on this success, the LEGEND collaboration has been formed to pursue a tonne-scale Ge-76 experiment. The collaboration aims to develop a phased 0 nu beta beta experimental program with discovery potential at a half-life approaching or at 1028 years, using existing resources as appropriate to expedite physics results.