Final Result of CUPID-0 Phase-I in the Search for the Se 82 Neutrinoless Double- ? Decay
CUPID-0 is the first pilot experiment of CUPID, a next-generation project for the measurement of neutrinoless double beta decay (0 nu DBD) with scintillating bolometers. The detector, consisting of 24 enriched and 2 natural ZnSe crystals, has been taking data at Laboratori Nazionali del Gran Sasso from June 2017 to December 2018, collecting a Se-82 exposure of 5.29 kg x yr. In this Letter we present the phase-I results in the search for O nu DBD.