Search for the double-beta decay of 82Se to the excited states of 82Kr with NEMO-3
- NázevTitle
- Search for the double-beta decay of 82Se to the excited states of 82Kr with NEMO-3Search for the double-beta decay of 82Se to the excited states of 82Kr with NEMO-3
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- R. Arnold, C. Augier, A.S. Barabash, A. Basharina-Freshville, L. Fajt, R. Hodák, M. Macko, F. Mamedov, P. Přidal, E. Rukhadze, A. Smetana, K. Smolek, I. Štekl
- Klíčová slovaKeywords
- double beta decay, neutrino, 82Se, excited state
- ExperimentCollaboration
- NEMO-3
- DOIDOI
- 10.1016/j.nuclphysa.2020.121701
- Časopis / citaceJournal / citation
- Nuclear Physics A 996, 121701 (2020) · ISSN 0375-9474
- RokYear
- 2020
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Podzemní laboratoř LSM - česká účast ve výzkumné infrastruktuře evropského významuUnderground laboratory LSM - Czech participation to European-level research infrastructure; LSM-CZ II - Podzemní laboratoř LSM - účast České republiky - LM2018107 (2020–2022)LSM-CZ II - Podzemní laboratoř LSM - účast České republiky - LM2018107 (2020–2022)
- CitovánoCited by
- 10 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://www.sciencedirect.com/science/article/am/pii/S0375947420300117?via%3Dih…
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The double-beta decay of 82Se to the 01 + excited state of 82Kr has been studied with the NEMO-3 detector using 0.93 kg of enriched 82Se measured for 4.75 y, corresponding to an exposure of 4.42 kg⋅y. A dedicated analysis to reconstruct the γ-rays has been performed to search for events in the 2e2γ channel. No evidence of a 2νββ decay to the 01 + state has been observed and a limit of T1/2 2ν(Se82,0gs +→01 +)>1.3×1021y at 90% CL has been set. Concerning the 0νββ decay to the 01 + state, a limit for this decay has been obtained with T1/2 0ν(Se82,0gs +→01 +)>2.3×1022y at 90% CL, independently from the 2νββ decay process. These results are obtained for the first time with a tracko-calo detector, reconstructing every particle in the final state.
The double-beta decay of 82Se to the 01 + excited state of 82Kr has been studied with the NEMO-3 detector using 0.93 kg of enriched 82Se measured for 4.75 y, corresponding to an exposure of 4.42 kg⋅y. A dedicated analysis to reconstruct the γ-rays has been performed to search for events in the 2e2γ channel. No evidence of a 2νββ decay to the 01 + state has been observed and a limit of T1/2 2ν(Se82,0gs +→01 +)>1.3×1021y at 90% CL has been set. Concerning the 0νββ decay to the 01 + state, a limit for this decay has been obtained with T1/2 0ν(Se82,0gs +→01 +)>2.3×1022y at 90% CL, independently from the 2νββ decay process. These results are obtained for the first time with a tracko-calo detector, reconstructing every particle in the final state.