CUPID-0 is the first large mass experiment based on cryogenic calorimeters (bolometers) that implements the dual read-out of light and heat for background rejection. The detector, consisting of 24 enriched Zn82Se crystals (5.28 kg of 82Se), is taking data in the underground LNGS (Italy) from March 2017. In this contribution we present the analysis that allowed to set the most stringent limit on the half-life of neutrino-less double beta decay of 82Se. We prove that the particle identification, enabled by the simultaneous read-out of heat and light, provides an unprecedented background level for cryogenic calorimeters of few 103 counts/keV/kg/y. Finally, we discuss the impact of these results on next generation projects.
Cardani, L., Azzolini, O., Barrera, M., Beeman, J., Bellini, F., Beretta, M., et al. (2019). Double beta decay search with CUPID-0: Results and Perspectives. Intervento presentato a: International Conference on High Energy Physics, ICHEP 2018 4-11 July, Seoul; South Korea [10.22323/1.340.0472].
Double beta decay search with CUPID-0: Results and Perspectives
Beretta, Mattia;Biassoni, Matteo;Brofferio, Chiara;Canonica, Lucia;Capelli, Silvia;Carniti, Paolo;Clemenza, Massimiliano;Cremonesi, Oliviero;Gironi, Luca;Giuliani, Andrea;Gorla, Paolo;Gotti, Claudio;Morganti, Silvio;Nastasi, Massimiliano;Nones, Claudia;PAGNANINI, Lorenzo;Pattavina, Luca;Pavan, Maura;Pessina, Gianluigi;Pozzi, Stefano;Previtali, Ezio;Puiu, Andrei;
2019
Abstract
CUPID-0 is the first large mass experiment based on cryogenic calorimeters (bolometers) that implements the dual read-out of light and heat for background rejection. The detector, consisting of 24 enriched Zn82Se crystals (5.28 kg of 82Se), is taking data in the underground LNGS (Italy) from March 2017. In this contribution we present the analysis that allowed to set the most stringent limit on the half-life of neutrino-less double beta decay of 82Se. We prove that the particle identification, enabled by the simultaneous read-out of heat and light, provides an unprecedented background level for cryogenic calorimeters of few 103 counts/keV/kg/y. Finally, we discuss the impact of these results on next generation projects.
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