The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90107%2F20%3A00344140" target="_blank" >RIV/68407700:90107/20:00344140 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1140/epjc/s10052-019-7578-6" target="_blank" >https://doi.org/10.1140/epjc/s10052-019-7578-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-019-7578-6" target="_blank" >10.1140/epjc/s10052-019-7578-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects

Popis výsledku v původním jazyce

CUPID-Mo is a bolometric experiment to search for neutrinoless double-beta decay (0νββ) of 100Mo. In this article, we detail the CUPID-Mo detector concept, assembly and installation in the Modane underground laboratory, providing results from the first datasets. The CUPID-Mo detector consists of an array of 20 100Mo-enriched 0.2 kg Li2MoO4 crystals operated as scintillating bolometers at ~20 mK. The Li2MoO4 crystals are complemented by 20 thin Ge optical bolometers to reject α events by the simultaneous detection of heat and scintillation light. We observe a good detector uniformity and an excellent energy resolution of 5.3 keV (6.5 keV) FWHM at 2615 keV, in calibration (physics) data. Light collection ensures the rejection of α particles at a level much higher than 99.9% – with equally high acceptance for γ/β events – in the region of interest for 100Mo 0νββ. We present limits on the crystals’ radiopurity: <=3 μBq/kg of 226Ra and <=2 μBq/kg of 232Th. We discuss the science reach of CUPID-Mo, which can set the most stringent half-life limit on the 100Mo 0νββ decay in half-a-year’s livetime. The achieved results show that CUPID-Mo is a successful demonstrator of the technology developed by the LUMINEU project and subsequently selected for the CUPID experiment, a proposed follow-up of CUORE, the currently running first tonne-scale bolometric 0νββ experiment.

Název v anglickém jazyce

The CUPID-Mo experiment for neutrinoless double-beta decay: performance and prospects

Popis výsledku anglicky

CUPID-Mo is a bolometric experiment to search for neutrinoless double-beta decay (0νββ) of 100Mo. In this article, we detail the CUPID-Mo detector concept, assembly and installation in the Modane underground laboratory, providing results from the first datasets. The CUPID-Mo detector consists of an array of 20 100Mo-enriched 0.2 kg Li2MoO4 crystals operated as scintillating bolometers at ~20 mK. The Li2MoO4 crystals are complemented by 20 thin Ge optical bolometers to reject α events by the simultaneous detection of heat and scintillation light. We observe a good detector uniformity and an excellent energy resolution of 5.3 keV (6.5 keV) FWHM at 2615 keV, in calibration (physics) data. Light collection ensures the rejection of α particles at a level much higher than 99.9% – with equally high acceptance for γ/β events – in the region of interest for 100Mo 0νββ. We present limits on the crystals’ radiopurity: <=3 μBq/kg of 226Ra and <=2 μBq/kg of 232Th. We discuss the science reach of CUPID-Mo, which can set the most stringent half-life limit on the 100Mo 0νββ decay in half-a-year’s livetime. The achieved results show that CUPID-Mo is a successful demonstrator of the technology developed by the LUMINEU project and subsequently selected for the CUPID experiment, a proposed follow-up of CUORE, the currently running first tonne-scale bolometric 0νββ experiment.

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

—

Rok uplatnění

2020

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

80

Číslo periodika v rámci svazku

44

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000615170700001

EID výsledku v databázi Scopus

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