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- Title
Search for neutrinoless double beta decay of 64Zn and 70Zn with CUPID-0.
- Authors
Azzolini, O.; Beeman, J. W.; Bellini, F.; Beretta, M.; Biassoni, M.; Brofferio, C.; Bucci, C.; Capelli, S.; Cardani, L.; Celi, E.; Carniti, P.; Casali, N.; Chiesa, D.; Clemenza, M.; Cremonesi, O.; Cruciani, A.; D'Addabbo, A.; Dafinei, I.; Domizio, S. Di; Ferroni, F.
- Abstract
CUPID-0 is the first pilot experiment of CUPID, a next-generation project searching for neutrinoless double beta decay. In its first scientific run, CUPID-0 operated 26 ZnSe cryogenic calorimeters coupled to light detectors in the underground Laboratori Nazionali del Gran Sasso. In this work, we analyzed a ZnSe exposure of 11.34 kg year to search for the neutrinoless double beta decay of 70 Zn and for the neutrinoless positron-emitting electron capture of 64 Zn. We found no evidence for these decays and set 90 % credible interval limits of T 1 / 2 0 ν β β ( 70 Zn) > 1.6 10 21 year and T 1 / 2 0 ν E C β + ( 64 Zn) > 1.2 × 10 22 year, surpassing by more than one order of magnitude the previous experimental results (Belli et al. in J Phys G 38(11):115107, https://doi.org/10.1088/0954-3899/38/11/115107, 2011).
- Subjects
NEUTRINOLESS double beta decay; ELECTRON capture; PHOTODETECTORS
- Publication
European Physical Journal C -- Particles & Fields, 2020, Vol 80, Issue 8, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-020-8280-4