| Literature DB >> 29932707 |
O Azzolini1, M T Barrera1, J W Beeman2, F Bellini3,4, M Beretta5,6, M Biassoni6, C Brofferio5,6, C Bucci7, L Canonica7,8, S Capelli5,6, L Cardani4, P Carniti5,6, N Casali4, L Cassina5,6, M Clemenza5,6, O Cremonesi6, A Cruciani4, A D'Addabbo7, I Dafinei4, S Di Domizio9,10, F Ferroni3,4, L Gironi5,6, A Giuliani11,12, P Gorla7, C Gotti5,6, G Keppel1, L Marini9,10, M Martinez3,4, S Morganti4, S Nagorny7,13, M Nastasi5,6, S Nisi7, C Nones14, D Orlandi7, L Pagnanini7,13, M Pallavicini9,10, V Palmieri1, L Pattavina7,13, M Pavan5,6, G Pessina6, V Pettinacci4, S Pirro7, S Pozzi5,6, E Previtali6, A Puiu5,6, F Reindl4, C Rusconi7,15, K Schäffner7,13, C Tomei4, M Vignati4, A S Zolotarova14.
Abstract
We report the result of the search for neutrinoless double beta decay of ^{82}Se obtained with CUPID-0, the first large array of scintillating Zn^{82}Se cryogenic calorimeters implementing particle identification. We observe no signal in a 1.83 kg yr ^{82}Se exposure, and we set the most stringent lower limit on the 0νββ ^{82}Se half-life T_{1/2}^{0ν}>2.4×10^{24} yr (90% credible interval), which corresponds to an effective Majorana neutrino mass m_{ββ}<(376-770) meV depending on the nuclear matrix element calculations. The heat-light readout provides a powerful tool for the rejection of α particles and allows us to suppress the background in the region of interest down to (3.6_{-1.4}^{+1.9})×10^{-3} counts/(keV kg yr), an unprecedented level for this technique.Year: 2018 PMID： 29932707 DOI： 10.1103/PhysRevLett.120.232502
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161