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. Di
- Ferroni, F.
- Gironi, L.
- Giuliani, A.
- Gorla, P.
- Gotti, C.
- Keppel, G.
- Martinez, M.
- 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.
Publication date
January 2018
DOI Publisher
Springer Science and Business Media LLC Language
EnglishAbstract
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 01+, 21+ and 22+ 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: Γ(82Se → 82Kr01+)8.55× 10- 24 yr- 1, Γ (82 Se → 82 Kr 21+)<6.25×10-24 yr- 1, Γ(82Se → 82Kr22+)8.25× 10- 24 yr- 1 (90% credible interval)
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