First Result on the Neutrinoless Double- β Decay of Se82 with CUPID-0

First Result on the Neutrinoless Double- β Decay of Se82 with CUPID-0

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 yr⁸²Se exposure, and we set the most stringent lower limit...

Full description

Bibliographic Details
Main Authors: Azzolini, O., Barrera, M. T., Beeman, J. W., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., Bucci, C., 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., Morganti, 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., Schäffner, K., Tomei, C., Vignati, M., Zolotarova, A. S., Canonica, Lucia
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:English
Published: American Physical Society 2018
Online Access:http://hdl.handle.net/1721.1/116138
Description
Summary: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 yr⁸²Se exposure, and we set the most stringent lower limit on the 0νββ ⁸²Se half-life T[subscript 1/2][superscript 0ν]>2.4×10²⁴  yr (90% credible interval), which corresponds to an effective Majorana neutrino mass m[subscript 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[subscript -1.4][superscript +1.9])×10⁻³  counts/(keV kg yr), an unprecedented level for this technique.

Similar Items