Search of the neutrino-less double beta decay of Se into the excited states of Kr with CUPID-0

O. Azzolini; M. T. Barrera; J. W. Beeman; F. Bellini; M. Beretta; M. Biassoni; E. Bossio; C. Brofferio; C. Bucci; L. Canonica; S. Capelli; L. Cardani; P. Carniti; N. Casali; L. Cassina; M. Clemenza; O. Cremonesi; A. Cruciani; A. D’Addabbo; I. Dafinei; S. Di Domizio; F. Ferroni; L. Gironi; A. Giuliani; P. Gorla; C. Gotti; G. Keppel; M. Martinez; S. Morganti; S. Nagorny; M. Nastasi; S. Nisi; C. Nones; D. Orlandi; L. Pagnanini; M. Pallavicini; V. Palmieri; L. Pattavina; M. Pavan; G. Pessina; V. Pettinacci; S. Pirro; S. Pozzi; E. Previtali; A. Puiu; C. Rusconi; K. Schäffner; C. Tomei; M. Vignati; A. Zolotarova

doi:10.1140/epjc/s10052-018-6340-9

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2018) 78: 888
https://doi.org/10.1140/epjc/s10052-018-6340-9

Regular Article - Experimental Physics

Search of the neutrino-less double beta decay of $^{82}$ Se into the excited states of $^{82}$ Kr with CUPID-0

O. Azzolini¹, M. T. Barrera¹, J. W. Beeman², F. Bellini³^,4, M. Beretta⁵^,6, M. Biassoni⁶, E. Bossio⁶, C. Brofferio⁵^,6, C. Bucci⁷, L. Canonica⁷^,15, S. Capelli⁵^,6, L. Cardani⁴^*, P. Carniti⁵^,6, N. Casali⁴, L. Cassina⁵^,6, M. Clemenza⁵^,6, O. Cremonesi⁶, A. Cruciani⁴, A. D’Addabbo⁷^,8, I. Dafinei⁴, S. Di Domizio⁹^,10, F. Ferroni³^,4, L. Gironi⁵^,6, A. Giuliani¹¹^,12, P. Gorla⁷, C. Gotti⁵^,6, G. Keppel¹, M. Martinez³^,4^,16, S. Morganti⁴, S. Nagorny⁷^,8^,17, M. Nastasi⁵^,6, S. Nisi⁷, C. Nones¹³, D. Orlandi⁷, L. Pagnanini⁵^,6, M. Pallavicini⁹^,10, V. Palmieri¹, L. Pattavina⁷^,8^,18, M. Pavan⁵^,6, G. Pessina⁶, V. Pettinacci³^,4, S. Pirro⁷, S. Pozzi⁵^,6, E. Previtali⁶, A. Puiu⁵^,6, C. Rusconi⁷^,14, K. Schäffner⁸, C. Tomei⁴, M. Vignati⁴ and A. Zolotarova¹³

¹ INFN, Laboratori Nazionali di Legnaro, 35020, Legnaro, Padova, Italy
² Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
³ Dipartimento di Fisica, Sapienza Università di Roma, 00185, Rome, Italy
⁴ INFN, Sezione di Roma, 00185, Rome, Italy
⁵ Dipartimento di Fisica, Università di Milano-Bicocca, 20126, Milan, Italy
⁶ INFN, Sezione di Milano Bicocca, 20126, Milan, Italy
⁷ INFN, Laboratori Nazionali del Gran Sasso, Assergi, 67010, L’Aquila, Italy
⁸ Gran Sasso Science Institute, 67100, L’Aquila, Italy
⁹ Dipartimento di Fisica, Università di Genova, 16146, Genoa, Italy
¹⁰ INFN, Sezione di Genova, 16146, Genoa, Italy
¹¹ CSNSM, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405, Orsay, France
¹² DiSAT, Università dell’Insubria, 22100, Como, Italy
¹³ IRFU, CEA, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
¹⁴ Department of Physics and Astronomy, University of South Carolina, Columbia, SC, 29208, USA
¹⁵ Present address: Max-Planck-Institut für Physik, 80805, Munich, Germany
¹⁶ Present address: Fundacion ARAID and U. Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
¹⁷ Present address: Queen’s University, Kingston, ON, K7L 3N6, Canada
¹⁸ Present address: Physik Department, Technische Universität München, D85748, Garching, Germany

^* e-mail: laura.cardani@roma1.infn.it

Received: 2 July 2018
Accepted: 13 October 2018
Published online: 1 November 2018

Abstract

The CUPID-0 experiment searches for double beta decay using cryogenic calorimeters with double (heat and light) read-out. The detector, consisting of 24 ZnSe crystals 95 $\%$ enriched in $^{82}$ Se and two natural ZnSe crystals, started data-taking in 2017 at Laboratori Nazionali del Gran Sasso. We present the search for the neutrino-less double beta decay of $^{82}$ Se into the 0 $$_1^+$$ , 2 and 2 $$_2^+$$ excited states of $^{82}$ Kr with an exposure of 5.74 kg $\cdot$ yr (2.24 $\times$ 10 $^{25}$ emitters $\cdot$ yr). We found no evidence of the decays and set the most stringent limits on the widths of these processes: $\varGamma$ ( $^{82}$ Se $\rightarrow ^{82}$ Kr $_{0_1^+}$ )8.55 $\times$ 10 $^{-24}$ yr $^{-1}$ , $\varGamma$ ( $^{82}$ Se $\rightarrow ^{82}$ Kr $_{2_1^+}$ ) $\,{<}\,6.25 \,{\times }\,10^{-24}$ yr $^{-1}$ , $\varGamma$ ( $^{82}$ Se $\rightarrow ^{82}$ Kr $_{2_2^+}$ )8.25 $\times$ 10 $^{-24}$ yr $^{-1}$ (90 $\%$ credible interval).