New results from the CUORE experiment

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrino-less 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 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 nu beta beta corresponding to a TeO2 exposure of 372.5 kg.yr and a median exclusion sensitivity to a Te-130 0 nu beta beta decay half-life of 1.7.10(25) yr. We find no evidence for 0 nu beta beta decay and set a 90% C.I. Bayesian lower limit of 3.2.10(25) yr on the Te-130 0 nu beta beta decay half-life. We present the current status of CUORE's search for 0 nu beta beta. We give an update of the CUORE background model and the measurement of the Te-130 two neutrino double-beta (2 nu beta beta) decay half-life. Eventually, we show the preliminary results on half-life limits from the analysis of Te-130 0 nu beta beta and 2 nu beta beta decay to the first 0(+) excited state of Xe-130.