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.
Articolo in rivista - Articolo scientifico
Neutrinoless double beta decay
English
2018
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].
File in questo prodotto:
File Dimensione Formato  
1_PhysRevLett.120.232502.pdf

Solo gestori archivio

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 2.01 MB
Formato Adobe PDF
2.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/196580
Citazioni
  • Scopus 90
  • ???jsp.display-item.citation.isi??? 77
Social impact