We report the result of the search for neutrinoless double beta decay of 82Se obtained with CUPID-0, the first large array of scintillating Zn82Se cryogenic calorimeters implementing particle identification. We observe no signal in a 1.83 kg yr 82Se exposure, and we set the most stringent lower limit on the 0vββ 82Se half-life T0v 1=2 > 2.4 × 1024 yr (90% credible interval), which corresponds to an effective Majorana neutrino mass mββ < (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 +1.9-1.4) × 10-3 counts=(keV kg yr), an unprecedented level for this technique.

Azzolini, O., Barrera, M., Beeman, J., Bellini, F., Beretta, M., Biassoni, M., et al. (2018). First result on the neutrinoless double-β decay of 82se with CUPID-0. PHYSICAL REVIEW LETTERS, 120(23) [10.1103/PhysRevLett.120.232502].

First result on the neutrinoless double-β decay of 82se with CUPID-0

M. Beretta;M. Biassoni;C. Brofferio;S. Capelli;P. Carniti;L. Cassina;M. Clemenza;O. Cremonesi;L. Gironi;A. Giuliani;P. Gorla;C. Gotti;M. Martinez;M. Nastasi;C. Nones;D. Orlandi;L. Pagnanini;L. Pattavina;M. Pavan;G. Pessina;S. Pozzi;E. Previtali;A. Puiu;
2018

Abstract

We report the result of the search for neutrinoless double beta decay of 82Se obtained with CUPID-0, the first large array of scintillating Zn82Se cryogenic calorimeters implementing particle identification. We observe no signal in a 1.83 kg yr 82Se exposure, and we set the most stringent lower limit on the 0vββ 82Se half-life T0v 1=2 > 2.4 × 1024 yr (90% credible interval), which corresponds to an effective Majorana neutrino mass mββ < (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 +1.9-1.4) × 10-3 counts=(keV kg yr), an unprecedented level for this technique.
Si
Articolo in rivista - Articolo scientifico
Scientifica
Neutrinoless double beta decay
English
Azzolini, O., Barrera, M., Beeman, J., Bellini, F., Beretta, M., Biassoni, M., et al. (2018). First result on the neutrinoless double-β decay of 82se with CUPID-0. PHYSICAL REVIEW LETTERS, 120(23) [10.1103/PhysRevLett.120.232502].
Azzolini, O; Barrera, M; Beeman, J; Bellini, F; Beretta, M; Biassoni, M; Brofferio, C; Bucci, C; Canonica, L; Capelli, S; Cardani, L; Carniti, P; Casali, N; Cassina, L; 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; Marini, L; Martinez, M; Morgenti, S; Nagorny, S; Nastasi, M; Nisi, S; Nones, C; Orlandi, D; Pagnanini, L; Pallavicini, M; Palmieri, V; Pattavina, L; Pavan, M; Pessina, G; Pettinacci, V; Pirro, S; Pozzi, S; Previtali, E; Puiu, A; Reindl, F; Rusconi, C; Sch ̈affner, 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/10281/196580
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