Search of the neutrino-less double beta decay of 82 Se into the excited states of 82 Kr with CUPID-0

Azzolini, O. ; Barrera, M.T. ; Beeman, J.W. ; Bellini, F. ; Beretta, M. ; Biassoni, M. ; Bossio, E. ; Brofferio, C. ; Bucci, C. ; Canonica, L. ; Capelli, S. ; Cardani, L. ; Carniti, P. ; Casali, N. ; Cassina, L. ; Clemenza, M. ; Cremonesi, O. ; Cruciani, A. ; D’Addabbo, A. ; Dafinei, I. ; Domizio, S.D. ; Ferroni, F. ; Gironi, L. ; Giuliani, A. ; Gorla, P. ; Gotti, C. ; Keppel, G. ; Martinez, M. (Universidad de Zaragoza) ; Morganti, S. ; Nagorny, S. ; Nastasi, M. ; Nisi, S. ; Nones, C. ; Orlandi, D. ; Pagnanini, L. ; Pallavicini, M. ; Palmieri, V. ; Pattavina, L. ; Pavan, M. ; Pessina, G. ; Pettinacci, V. ; Pirro, S. ; Pozzi, S. ; Previtali, E. ; Puiu, A. ; Rusconi, C. ; Schäffner, K. ; Tomei, C. ; Vignati, M. ; Zolotarova, A.

Resumen: The CUPID-0 experiment searches for double beta decay using cryogenic calorimeters with double (heat and light) read-out. The detector, consisting of 24 ZnSe crystals 95% enriched in 82Se and two natural ZnSe crystals, started data-taking in 2017 at Laboratori Nazionali del Gran Sasso. We present the search for the neutrino-less double beta decay of 82Se into the 0+1, 2+1 and 2+2 excited states of 82Kr with an exposure of 5.74 kg·yr (2.24×1025 emitters·yr). We found no evidence of the decays and set the most stringent limits on the widths of these processes: G(82Se ¿82Kr0+1)8.55×10-24 yr-1, G (82 Se ¿82 Kr 2+1)<6.25×10-24 yr-1, G(82Se ¿82Kr2+2)8.25×10-24 yr-1 (90% credible interval).

Idioma: Inglés

DOI: 10.1140/epjc/s10052-018-6340-9

Año: 2018

Publicado en: European Physical Journal C 78 (2018), 888 [8 pp.]
ISSN: 1434-6044

Factor impacto JCR: 4.843 (2018)

Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 6 / 29 = 0.207 (2018) - Q1 - T1

Factor impacto SCIMAGO: 1.972 - Physics and Astronomy (miscellaneous) (Q1) - Engineering (miscellaneous) (Q1)

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)