Results on double beta decay of 82Se with CUPID-0 Phase i
- Creators
- Pagnanini L.
- 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.
- Nagorny S.
- Nastasi M.
- Nisi S.
- Nones C.
- Orlandi D.
- 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.
- Others:
- Pagnanini, L.
- 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.
- Nagorny, S.
- Nastasi, M.
- Nisi, S.
- Nones, C.
- Orlandi, D.
- 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.
Description
CUPID-0 is the first neutrinoless double beta decay (0νββ) experiment based on highly enriched scintillating bolometers. It consists in an array of Zn82Se detectors operated at LNGS since 2017. During the Phase I of data taking, concluded at the end of 2018, the experiment collected an exposure of 9.95 kg·yr of ZnSe. The simultaneous heat-light readout provides a powerful rejection of α-particles and allows us to suppress the background in the region of interest down to 3.5-0.9+1.0×10-3 counts/(keV·kg·y), an unprecedented level for this technique. Thanks to this achievement, we set the most stringent lower limit on the 82Se 0νββ half-life. Moreover, we have developed a full background model, which allows us to identify the origin of the events in the region of interest. The reconstruction of the CUPID-0 spectrum has enabled us to perform the most precise measurement of the 2νββ of 82Se.
Additional details
- URL
- http://hdl.handle.net/11567/991860
- URN
- urn:oai:iris.unige.it:11567/991860
- Origin repository
- UNIGE