Result on the Neutrinoless Double Beta Decay Search of 82Se with the CUPID-0 Experiment

Bellini, Fabio ; Azzolini, Oscar ; Teresa Barrera, Maria ; Beeman, Jeffrey ; Beretta, Mattia ; Biassoni, Matteo ; Brofferio, Chiara ; Bucci, Carlo ; Canonica, Lucia ; Capelli, Silvia ; Cardani, Laura ; Carniti, Paolo ; Casali, Nicola ; Cassina, Lorenzo ; Clemenza, Massimiliano ; Cremonesi, Oliverio ; Cruciani, Angelo ; D\u2019Addabbo, Antonio ; Dafinei, Ioan ; Di Domizio, Sergio ; Ferroni, Fernando ; Gironi, Luca ; Giuliani, Andrea ; Gorla, Paolo ; Gotti, Claudio ; Keppel, Giorgio ; Martinez, Maria (Universidad de Zaragoza) ; Morganti, Silvio ; Nagorny, Sergei ; Nastasi, Massimiliano ; Nisi, Stefano ; Nones, Claudia ; Orlandi, Donato ; Pagnanini, Lorenzo ; Pallavicini, Marco ; Palmieri, Vincenzo ; Pattavina, Luca ; Pavan, Maura ; Pessina, Gianluigi ; Pettinacci, Valerio ; Pirro, Stefano ; Pozzi, Stefano ; Previtali, Ezio ; Puiu, Andrei ; Rusconi, Claudia ; Sch\u00e4ffner, Karoline ; Tomei, Claudia ; Vignati, Marco ; Zolotarova, Anastasia

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)

Financiación: info:eu-repo/grantAgreement/EC/FP7/247115/EU/Low-background Underground Cryogenic Installation For Elusive Rates/LUCIFER

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)