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Analysis of cryogenic calorimeters with light and heat read-out for double beta decay searches.

  • Author(s): Azzolini, O
  • Barrera, MT
  • Beeman, JW
  • Bellini, F
  • Beretta, M
  • Biassoni, M
  • Bossio, E
  • 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
  • Domizio, S Di
  • Ferroni, F
  • Gironi, L
  • Giuliani, A
  • Gorla, P
  • Gotti, C
  • Keppel, G
  • 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
  • Rusconi, C
  • Schäffner, K
  • Tomei, C
  • Vignati, M
  • Zolotarova, A
  • et al.
Abstract

The suppression of spurious events in the region of interest for neutrinoless double beta decay will play a major role in next generation experiments. The background of detectors based on the technology of cryogenic calorimeters is expected to be dominated by α particles, that could be disentangled from double beta decay signals by exploiting the difference in the emission of the scintillation light. CUPID-0, an array of enriched Zn 82 Se scintillating calorimeters, is the first large mass demonstrator of this technology. The detector started data-taking in 2017 at the Laboratori Nazionali del Gran Sasso with the aim of proving that dual read-out of light and heat allows for an efficient suppression of the α background. In this paper we describe the software tools we developed for the analysis of scintillating calorimeters and we demonstrate that this technology allows to reach an unprecedented background for cryogenic calorimeters.

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