| Issue |
EPJ Web Conf.
Volume 342, 2025
14th International Spring Seminar on Nuclear Physics “Cutting-Edge Developments in Nuclear Structure Physics”
|
|
|---|---|---|
| Article Number | 01005 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202534201005 | |
| Published online | 21 November 2025 | |
https://doi.org/10.1051/epjconf/202534201005
Neutrinoless double-beta decay search with the LEGEND experiment
1 INFN Sezione di Padova
2 Università degli Studi di Padova
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 21 November 2025
Abstract
Neutrinoless double-beta decay is a nuclear decay, given as (A,Z) → (A,Z+2)+2e-, with deep consepuences for the understanding of our universe. A strong experimental program is underway to search for this transition with many proposed experiments using different tecgnologies. In this article the LEGEND experiment, which uses 76Ge as the isotope of interest, will be described. We will discuss both the first stage, LEGEND-200, which is now taking data at the Laboratori Nazionali del Gran Sasso of INEN in Italy, and the future stage, LEGEND-10000 LEGEND-200 gas analyzed data collected from March 2023 to February 2024 for an exposure of 61 kg·yr with a background index not far away from its goal of 2×10-4 cnts/(keV·kg·yr). Combining the LEGEND-200 data with those of GERDA and MAJORANA DEMONSTRATOR one obtains an exclusion sensitivity on tge half-life of 0νββ decay in 76Ge of T1/2 & 2.8 × 1026 yr at 90% C.L. and a limit on T1/2 > 1.9 × 1026 yr at 90% C.L.
Publisher note: The References were missing, they have been added on November 27, 2025.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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