Final Result of CUPID-0 Phase-I in the Search for the Se 82 Neutrinoless Double- β Decay
- Creators
- Azzolini O.
- Beeman J. W.
- Bellini F.
- Beretta M.
- Biassoni M.
- Brofferio C.
- Bucci C.
- Capelli S.
- Cardani L.
- Carniti P.
- Casali N.
- Chiesa D.
- Clemenza M.
- Cremonesi O.
- Cruciani 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. S.
- Others:
- Azzolini, O.
- Beeman, J. W.
- Bellini, F.
- Beretta, M.
- Biassoni, M.
- Brofferio, C.
- Bucci, C.
- Capelli, S.
- Cardani, L.
- Carniti, P.
- Casali, N.
- Chiesa, D.
- Clemenza, M.
- Cremonesi, O.
- Cruciani, 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. S.
Description
CUPID-0 is the first pilot experiment of CUPID, a next-generation project for the measurement of neutrinoless double beta decay (0 nu DBD) with scintillating bolometers. The detector, consisting of 24 enriched and 2 natural ZnSe crystals, has been taking data at Laboratori Nazionali del Gran Sasso from June 2017 to December 2018, collecting a Se-82 exposure of 5.29 kg x yr. In this Letter we present the phase-I results in the search for O nu DBD. We demonstrate that the technology implemented by CUPID-0 allows us to reach the lowest background for calorimetric experiments: (3.5(-0.9)(+1.0)) x 10(-3) counts/ (keV kg yr). Monitoring 3.88 x 10(25) Se-82 nuclei x yr we reach a 90% credible interval median sensitivity of T-1/2(0 nu) > 5.0 x 10(24) yr and set the most stringent limit on the half-life of Se-82 O nu DBD: T-1/2(0 nu) > 3.5 x 10(24) yr (90% credible interval), corresponding to m(beta beta) < (311-638) meV depending on the nuclear matrix element calculations.
Additional details
- URL
- http://hdl.handle.net/11567/976444
- URN
- urn:oai:iris.unige.it:11567/976444
- Origin repository
- UNIGE