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New results from the CUORE experiment.

Authors :
Nutini, I.
Adams, D. Q.
Alduino, C.
Alfonso, K.
Avignone III, F. T.
Azzolini, O.
Bari, G.
Bellini, F.
Benato, G.
Beretta, M.
Biassoni, M.
Branca, A.
Brofferio, C.
Bucci, C.
Camilleri, J.
Caminata, A.
Campani, A.
Canonica, L.
Cao, X. G.
Capelli, S.
Source :
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics. 3/10/2022, Vol. 37 Issue 7, p1-11. 11p.
Publication Year :
2022

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrino-less double-beta (0 ν β β) decay that has been able to reach the one-ton scale. The detector, located at the Laboratori Nazionali del Gran Sasso in Italy, consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. Following the completion of the detector construction in August 2016, CUORE began its first physics data run in 2017 at a base temperature of about 10 mK. Following multiple optimization campaigns in 2018, CUORE is currently in stable operating mode. In 2019, CUORE released its second result of the search for 0 ν β β corresponding to a TeO2 exposure of 372.5 kg ⋅ yr and a median exclusion sensitivity to a 130Te 0 ν β β decay half-life of 1. 7 ⋅ 1 0 2 5 yr. We find no evidence for 0 ν β β decay and set a 90% C.I. Bayesian lower limit of 3. 2 ⋅ 1 0 2 5 yr on the 130Te 0 ν β β decay half-life. We present the current status of CUORE's search for 0 ν β β. We give an update of the CUORE background model and the measurement of the 130Te two neutrino double-beta (2 ν β β) decay half-life. Eventually, we show the preliminary results on half-life limits from the analysis of 130Te 0 ν β β and 2 ν β β decay to the first 0 + excited state of 1 3 0 Xe. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0217751X
Volume :
37
Issue :
7
Database :
Academic Search Index
Journal :
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics
Publication Type :
Academic Journal
Accession number :
156279521
Full Text :
https://doi.org/10.1142/S0217751X22400140