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New results from the CUORE experiment

Authors :
Giachero, A
Adams, DQ
Alduino, C
Alfonso, K
Avignone, FT
Azzolini, O
Bari, G
Bellini, F
Benato, G
Biassoni, M
Branca, A
Brofferio, C
Bucci, C
Camilleri, J
Caminata, A
Campani, A
Canonica, L
Cao, XG
Capelli, S
Cappelli, L
Cardani, L
Carniti, P
Casali, N
Chiesa, D
Chott, N
Clemenza, M
Copello, S
Cosmelli, C
Cremonesi, O
Creswick, RJ
D'Addabbo, A
Dafinei, I
Davis, CJ
Dell'Oro, S
Di Domizio, S
Dompè, V
Fang, DQ
Fantini, G
Faverzani, M
Ferri, E
Ferroni, F
Fiorini, E
Franceschi, MA
Freedman, SJ
Fu, SH
Fujikawa, BK
Gironi, L
Giuliani, A
Gorla, P
Gotti, C
Gutierrez, TD
Han, K
Hansen, E
Heeger, KM
Huang, RG
Huang, HZ
Johnston, J
Keppel, G
Kolomensky, YG
Ligi, C
Ma, YG
Ma, L
Marini, L
Maruyama, RH
Mayer, D
Mei, Y
Moggi, N
Morganti, S
Napolitano, T
Nastasi, M
Nikkel, J
Nones, C
Norman, EB
Nucciotti, A
Nutini, I
O'Donnell, T
Ouellet, JL
Pagan, S
Pagliarone, CE
Pagnanini, L
Pallavicini, M
Pattavina, L
Pavan, M
Pessina, G
Pettinacci, V
Pira, C
Pirro, S
Pozzi, S
Previtali, E
Puiu, A
Rosenfeld, C
Rusconi, C
Sakai, M
Sangiorgio, S
Schmidt, B
Scielzo, ND
Sharma, V
Singh, V
Sisti, M
Speller, D
Source :
International Journal of Modern Physics A, vol 37, iss 07, Proceedings of Science, vol 390, iss 1
Publication Year :
2020
Publisher :
eScholarship, University of California, 2020.

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first cryogenic experiment searching for neutrinoless double-beta ($0\nu\beta\beta$) 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 TeO$_2$ 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 2\textsuperscript{nd} result of the search for $0\nu\beta\beta$ with a TeO$_2$ exposure of 372.5 kg$\cdot$yr and a median exclusion sensitivity to a $^{130}$Te $0\nu\beta\beta$ decay half-life of $1.7\cdot 10^{25}$ yr. We find no evidence for $0\nu\beta\beta$ decay and set a 90\% C.I. (credibility interval) Bayesian lower limit of $3.2\cdot 10^{25}$ yr on the $^{130}$Te $0\nu\beta\beta$ decay half-life. In this work, we present the current status of CUORE's search for $0\nu\beta\beta$, as well as review the detector performance. Finally, we give an update of the CUORE background model and the measurement of the $^{130}$Te two neutrino double-beta ($2\nu\beta\beta$) decay half-life.

Details

Database :
OpenAIRE
Journal :
International Journal of Modern Physics A, vol 37, iss 07, Proceedings of Science, vol 390, iss 1
Accession number :
edsair.dedup.wf.001..2c0bb93d2543543b99b9d01d288fddf8