Present and Future of 0ν2β Searches with Germanium

Author:

Burlac NinaORCID,Salamanna GiuseppeORCID

Abstract

Among the several experiments and techniques conceived of to search for neutrinoless double β decay (0ν2β) in a handful of isotopes, presently the best lower limit on the half-life for this rare process, is provided by those using 76Ge, a rare isotope of germanium. Such a lower limit is of 1.8 × 1026 y. Building from such a successful achievement of the GERDA and Majorana Demonstrator experiments, the baton with 76Ge passes now to the LEGEND experiment. Using a two-stage approach with about 200 kg and then 1 t of germanium, LEGEND aims to attain a sensitivity of around 1028 y, which will enable it to probe the standard inverted-ordering neutrino mass scenario. We touch upon the past generation of experiments to illustrate their strong and weak points, review the general concept and design of LEGEND, and describe the LEGEND-200 detector and its preliminary performance. We also illustrate how the backgrounds can have a dramatic effect on the search and in which way the latter can be mitigated.

Publisher

MDPI AG

Subject

General Physics and Astronomy

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Mass spectrometry developments of 232Th and 238U radiopurity measurements for LEGEND;Journal of Radioanalytical and Nuclear Chemistry;2024-01-29

2. The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment;Journal of Instrumentation;2023-09-01

3. The LEGEND-200 LAr instrumentation in the search of neutrinoless double beta decay;Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment;2023-03

4. Editorial for the Special Issue “Neutrinoless Double Beta Decay”;Universe;2022-11-17

5. Production and validation of scintillating structural components from low-background Poly(ethylene naphthalate);Journal of Instrumentation;2022-01-01

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