CUPID-0 is the first pilot experiment of CUPID, a next-generation project for the measurement of neutrinoless double beta decay (0νDBD) 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 Se82 exposure of 5.29 kg×yr. In this Letter we present the phase-I results in the search for 0νDBD. 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)×10-3 counts/(keV kg yr). Monitoring 3.88×1025 Se82 nuclei×yr we reach a 90% credible interval median sensitivity of T1/20ν>5.0×1024 yr and set the most stringent limit on the half-life of Se82 0νDBD: T1/20ν>3.5×1024 yr (90% credible interval), corresponding to mββ<(311-638) meV depending on the nuclear matrix element calculations.

Azzolini, O., Beeman, J., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., et al. (2019). Final Result of CUPID-0 Phase-I in the Search for the Se 82 Neutrinoless Double- β Decay. PHYSICAL REVIEW LETTERS, 123(3) [10.1103/PhysRevLett.123.032501].

Final Result of CUPID-0 Phase-I in the Search for the Se 82 Neutrinoless Double- β Decay

Beretta, M.;Biassoni, M.;Brofferio, C.;Capelli, S.;Carniti, P.;Chiesa, D.;Clemenza, M.;Cremonesi, O.;Gironi, L.;Gotti, C.;Nastasi, M.;Pagnanini, L.;Pavan, M.;Pessina, G.;Pozzi, S.;Previtali, E.;Puiu, A.;
2019

Abstract

CUPID-0 is the first pilot experiment of CUPID, a next-generation project for the measurement of neutrinoless double beta decay (0νDBD) 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 Se82 exposure of 5.29 kg×yr. In this Letter we present the phase-I results in the search for 0νDBD. 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)×10-3 counts/(keV kg yr). Monitoring 3.88×1025 Se82 nuclei×yr we reach a 90% credible interval median sensitivity of T1/20ν>5.0×1024 yr and set the most stringent limit on the half-life of Se82 0νDBD: T1/20ν>3.5×1024 yr (90% credible interval), corresponding to mββ<(311-638) meV depending on the nuclear matrix element calculations.
Si
Articolo in rivista - Articolo scientifico
Scientifica
Bolometers; Double Beta Decay; Rare Events; Neutrinos
English
Azzolini, O., Beeman, J., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., et al. (2019). Final Result of CUPID-0 Phase-I in the Search for the Se 82 Neutrinoless Double- β Decay. PHYSICAL REVIEW LETTERS, 123(3) [10.1103/PhysRevLett.123.032501].
Azzolini, O; Beeman, J; 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; Schäffner, K; Tomei, C; Vignati, M; Zolotarova, A
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/236750
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