Resumen: CUPID-0 is the first large array of scintillating Zn 82 Se cryogenic calorimeters (bolometers) implementing particle identification for the search of the neutrinoless double beta decay (0 \u03bd ß ß ). The detector consists of 24 enriched Zn 82 Se bolometers for a total 82 Se mass of 5.28 kg and it has been taking data in the underground LNGS (Italy) since March 2017. In this article we show how the dual read-out provides a powerful tool for the a particles rejection. The simultaneous use of the heat and light information allows us to reduce the background down to (3.2 \u2212 1.1 + 1.3 )\u00d710 \u2212 3 counts(keV kg year), an unprecedented level for cryogenic calorimeters. In a total exposure of 5.46 kg year Zn 82 Se we set the most stringent limit on the 0 \u03bd ß ß decay 82 Se half-life T 1 2 0 \u03bd > 4.0 \u00d7 10 24 year at 90% C.I. Idioma: Inglés DOI: 10.3390/UNIVERSE5010002 Año: 2018 Publicado en: Universe 5, 1 (2018), 2 ISSN: 2218-1997 Factor impacto JCR: 2.165 (2018) Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 34 / 69 = 0.493 (2018) - Q2 - T2 Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 14 / 29 = 0.483 (2018) - Q2 - T2 Factor impacto SCIMAGO: 0.715 - Physics and Astronomy (miscellaneous) (Q2)