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- Title
Search of the neutrino-less double beta decay of 82Se into the excited states of 82Kr with CUPID-0.
- Authors
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.
- Abstract
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).
- Subjects
NEUTRINOLESS double beta decay; EXCITED states; PARTICLE detectors; CALORIMETERS; ENERGY levels (Quantum mechanics)
- Publication
European Physical Journal C -- Particles & Fields, 2018, Vol 78, Issue 11, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-018-6340-9