Latest results from the CUORE experiment

Campani, A. (2021) Latest results from the CUORE experiment. Il nuovo cimento C, 44 (6). pp. 1-6. ISSN 1826-9885

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Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is a tonne-scale experiment located at the Laboratori Nazionali del Gran Sasso that exploits the bolometric technique to search for neutrinoless double beta (0νββ) decay of 130Te. Its detector consists of an array of 988 natural TeO2 crystals grouped into 19 towers. With a total active mass of 742 kg (∼206 kg of 130Te), CUORE is kept at a very low temperature (∼10 mK) by means of a powerful custom made dilution refrigerator. Data taking started at the beginning of 2017. Following several optimization campaigns in 2018 and early 2019, CUORE is currently in stable operating mode. After a brief introduction on the 0νββ decay mechanism and the CUORE detector, we focus on the second CUORE 0νββ result attained with an accumulated exposure of 372.5 kg · yr and a median exclusion sensitivity of 1.7 · 1025 yr. No evidence of 0νββ signal was observed and a lower limit of 3.2 · 1025 yr at the 90% Credibility Interval (C.I.) on the 130Te half-life for this process was set. Finally, we discuss a new measurement of the 130Te 2νββ half-life obtained with an improved model of CUORE background and present the CUORE future perspectives.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	10 Dec 2021 10:09
Last Modified:	10 Dec 2021 10:09
URI:	http://eprints.bice.rm.cnr.it/id/eprint/21493

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