Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation
- NázevTitle
- Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX InstallationSearch for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- A.S. Barabash, G. Warot, S. Nagorny, L. Pagnanini, Y. Shitov, I. Štekl
- Klíčová slovaKeywords
- double beta decay, neutrino, excited state, HPGe detector
- DOIDOI
- 10.1134/S106377962470237X
- Časopis / citaceJournal / citation
- Physics of Particles and Nuclei 56(3), 831-834 (2025) · ISSN 1531-8559
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- LSM-CZ III - Podzemní laboratoř LSM - účast České republiky - LM2023063 (2023–2026)LSM-CZ III - Podzemní laboratoř LSM - účast České republiky - LM2023063 (2023–2026); Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
- CitovánoCited by
- 1 (INSPIRE-HEP)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
A search for the processes of double beta decay of 82Se into excited states of 82Kr is conducted using the OBELIX setup. The measurements are conducted using a 600 cm3 HPGe detector. The detector is surrounded by 6.5 kg of enriched selenium (the content of 82Se was ~92.5%). The data collected over 17 572.2 h of measurements are given. As a result, a world-record sensitivity is reached for transitions of this type. Specifically, we have found an indication of the existence of two-neutrino 82Se decay into the first 0+82Kr excited state with a half-life of × 1022 years.
A search for the processes of double beta decay of 82Se into excited states of 82Kr is conducted using the OBELIX setup. The measurements are conducted using a 600 cm3 HPGe detector. The detector is surrounded by 6.5 kg of enriched selenium (the content of 82Se was ~92.5%). The data collected over 17 572.2 h of measurements are given. As a result, a world-record sensitivity is reached for transitions of this type. Specifically, we have found an indication of the existence of two-neutrino 82Se decay into the first 0+82Kr excited state with a half-life of × 1022 years.