Final results on the 0 nu beta beta decay half-life limit of Mo-100 from the CUPID-Mo experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90107%2F22%3A00363776" target="_blank" >RIV/68407700:90107/22:00363776 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epjc/s10052-022-10942-5" target="_blank" >https://doi.org/10.1140/epjc/s10052-022-10942-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-022-10942-5" target="_blank" >10.1140/epjc/s10052-022-10942-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Final results on the 0 nu beta beta decay half-life limit of Mo-100 from the CUPID-Mo experiment

Popis výsledku v původním jazyce

The CUPID-Mo experiment to search for 0 nu beta beta decay in Mo-100 has been recently completed after about 1.5 years of operation at Laboratoire Souterrain de Modane (France). It served as a demonstrator for CUPID, a next generation 0 nu beta beta decay experiment. CUPID-Mo was comprised of 20 enriched Li-2 (MoO4)-Mo-100 scintillating calorimeters, each with a mass of similar to 0.2 kg, operated at similar to 20 mK. We present here the final analysis with the full exposure of CUPID-Mo (Mo-100 exposure of 1.47 kg x year) used to search for lepton number violation via 0 nu beta beta decay. We report on various analysis improvements since the previous result on a subset of data, reprocessing all data with these new techniques. We observe zero events in the region of interest and set a new limit on the Mo-100 0 nu beta beta decay half-life of T-1/2(0 nu) > 1.8 x 10(24) year (stat. + syst.) at 90% CI. Under the light Majorana neutrino exchange mechanism this corresponds to an effective Majorana neutrino mass of < m(beta beta)> < (0.28-0.49) eV, dependent upon the nuclear matrix element utilized.

Název v anglickém jazyce

Final results on the 0 nu beta beta decay half-life limit of Mo-100 from the CUPID-Mo experiment

Popis výsledku anglicky

The CUPID-Mo experiment to search for 0 nu beta beta decay in Mo-100 has been recently completed after about 1.5 years of operation at Laboratoire Souterrain de Modane (France). It served as a demonstrator for CUPID, a next generation 0 nu beta beta decay experiment. CUPID-Mo was comprised of 20 enriched Li-2 (MoO4)-Mo-100 scintillating calorimeters, each with a mass of similar to 0.2 kg, operated at similar to 20 mK. We present here the final analysis with the full exposure of CUPID-Mo (Mo-100 exposure of 1.47 kg x year) used to search for lepton number violation via 0 nu beta beta decay. We report on various analysis improvements since the previous result on a subset of data, reprocessing all data with these new techniques. We observe zero events in the region of interest and set a new limit on the Mo-100 0 nu beta beta decay half-life of T-1/2(0 nu) > 1.8 x 10(24) year (stat. + syst.) at 90% CI. Under the light Majorana neutrino exchange mechanism this corresponds to an effective Majorana neutrino mass of < m(beta beta)> < (0.28-0.49) eV, dependent upon the nuclear matrix element utilized.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

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Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

82

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

000884904400003

EID výsledku v databázi Scopus

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