New results from the CUORE experiment

I Nutini,M Biassoni,M Pavan,O Azzolini,M Beretta,V Singh,C Rusconi,A Caminata,K M Heeger,F T Avignone,S Zucchelli,T D Gutierrez,M Faverzani,P T Surukuchi,I Dafinei,C Rosenfeld,C Bucci,D Q Fang,S Zimmermann,B K Fujikawa,F Bellini,G Pessina,A Campani,F Terranova,N Casali,Yu G Kolomensky,S Pagan,E Celi,G Fantini,B Welliver,S L Wagaarachchi,C Brofferio,A Nucciotti,N D Scielzo,G Bari,M Vignati,L Marini,L Gironi,F Ferroni,R J Creswick,C Tomei,S Pirro,S Morganti,G Keppel,L Pagnanini,V Pettinacci,S Copello,N Moggi,S Di Domizio,L Pattavina,T Napolitano,A Puiu,P Gorla,C Nones,H Z Huang,C Alduino,A Giuliani,L Taffarello,C Pira,K Alfonso,E Previtali,L Cardani,S Sangiorgio,A Branca,C Gotti,C Pagliarone ,P Carniti,Douglas Q Adams ,V Dompè ,J Johnston,Benjamin Schmidt ,A D’Addabbo,R G Huang,L Cappelli,A Giachero,E B Norman,R Maruyama ,M A Franceschi,M Nastasi,M Sakai,E Ferri,X G Cao,K Vetter ,S Dell’Oro,E Fiorini,L Canonica,J R Wilson ,D Speller,E V Hansen,J Camilleri,L Ma,M Sisti,K Wilson,S J Freedman,D Chiesa,D Mayer,V Sharma,T O’Donnell,Y G ,L A Winslow,S Fu ,B S Wang,Y Mei,S Capelli,O Cremonesi,G Benato,M Pallavicini,M Clemenza,J L Ouellet,Silvia Pozzi ,C Ligi,J Nikkel,K Han

doi:10.1142/s0217751x22400140

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrino-less double-beta (0[Formula: see text]) 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[Formula: see text] corresponding to a TeO2 exposure of 372.5 kg[Formula: see text]⋅[Formula: see text]yr and a median exclusion sensitivity to a 130Te 0[Formula: see text] decay half-life of [Formula: see text] yr. We find no evidence for 0[Formula: see text] decay and set a 90% C.I. Bayesian lower limit of [Formula: see text] yr on the 130Te 0[Formula: see text] decay half-life. We present the current status of CUORE’s search for 0[Formula: see text]. We give an update of the CUORE background model and the measurement of the 130Te two neutrino double-beta (2[Formula: see text]) decay half-life. Eventually, we show the preliminary results on half-life limits from the analysis of 130Te 0[Formula: see text] and 2[Formula: see text] decay to the first 0[Formula: see text] excited state of [Formula: see text]Xe.

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