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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F20%3A00338232" target="_blank" >RIV/68407700:21670/20:00338232 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.nuclphysa.2020.121701" target="_blank" >https://doi.org/10.1016/j.nuclphysa.2020.121701</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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 +)>1.3x1021y 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 +)>2.3x1022y 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 +)>1.3x1021y 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 +)>2.3x1022y 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/EF16_013%2F0001733" target="_blank" >EF16_013/0001733: Podzemní laboratoř LSM - česká účast ve výzkumné infrastruktuře evropského významu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Physics A

ISSN

0375-9474

e-ISSN

1873-1554

Svazek periodika

996

Číslo periodika v rámci svazku

121701

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

21

Strana od-do

—

Kód UT WoS článku

000519669400015

EID výsledku v databázi Scopus

2-s2.0-85078494158