Search for neutrinoless double beta decay of 64 Zn and 70 Zn with CUPID-0
- 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.
- Di Domizio S.
- Ferroni F.
- Gironi L.
- Giuliani A.
- Gorla P.
- Gotti C.
- Keppel G.
- Martinez M.
- Nagorny S.
- Nastasi M.
- Nisi S.
- Nones C.
- Orlandi D.
- Pagnanini L.
- Pallavicini M.
- Pattavina L.
- Pavan M.
- Pessina G.
- Pettinacci V.
- Pirro S.
- Pozzi S.
- Previtali E.
- Puiu A.
- Rusconi C.
- Schaffner K.
- Tomei C.
- Vignati M.
- Zolotarova A.
DOIAbstract
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 70Zn and for the neutrinoless positron-emitting electron capture of 64Zn. We found no evidence for these decays and set 90% credible interval limits of T1/20νββ(70Zn) > 1.6 10 21 year and T1/20νECβ+(64Zn) > 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):11510...
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