Search for the double-beta decay of Se-82 to the excited states of Kr-82 with NEMO-3

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422149" target="_blank" >RIV/00216208:11320/20:10422149 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9JFXUEi5av" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9JFXUEi5av</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nuclphysa.2020.121701" target="_blank" >10.1016/j.nuclphysa.2020.121701</a>

Result language
angličtina
Original language name
Search for the double-beta decay of Se-82 to the excited states of Kr-82 with NEMO-3
Original language description
The double-beta decay of Se-82 to the 0(1)(+) excited state of Kr-82 has been studied with the NEMO-3 detector using 0.93 kg of enriched Se-82 measured for 4.75 y, corresponding to an exposure of 4.42 kg.y. A dedicated analysis to reconstruct the gamma-rays has been performed to search for events in the 2e2 gamma channel. No evidence of a 2 nu beta beta decay to the 0(1)(+) state has been observed and a limit of T-1/2(2 nu) (Se-82, 0(gs)(+) -> 0(1)(+)) > 1.3 x 10(21) y at 90% CL has been set. Concerning the 0 nu beta beta decay to the 0(1)(+)-state, a limit for this decay has been obtained with T-1/2(0 nu) (Se-82, 0(gs)(+) -> 0(1)(+)) > 2.3 x 10(22) y at 90% CL, independently from the 2 nu beta beta decay process. These results are obtained for the first time with a tracko-calo detector, reconstructing every particle in the final state. (C) 2020 Elsevier B.V. All rights reserved.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)