CUPID-Mo, located in the Laboratoire Souterrain de Modane (France), was a demonstrator for the next generation 0 νββ decay experiment, CUPID. It consisted of an array of 20 enriched Li 2100 MoO 4 bolometers and 20 Ge light detectors and has demonstrated that the technology of scintillating bolometers with particle identification capabilities is mature. Furthermore, CUPID-Mo can inform and validate the background prediction for CUPID. In this paper, we present a detailed model of the CUPID-Mo backgrounds. This model is able to describe well the features of the experimental data and enables studies of the 2 νββ decay and other processes with high precision. We also measure the radio-purity of the Li 2100 MoO 4 crystals which are found to be sufficient for the CUPID goals. Finally, we also obtain a background index in the region of interest of 3.7 -0.8+0.9 (stat) -0.7+1.5 (syst) ×10-3 counts/ Δ EFWHM/ mol iso/ year , the lowest in a bolometric 0 νββ decay experiment.

Augier, C., Barabash, A., Bellini, F., Benato, G., Beretta, M., Bergé, L., et al. (2023). The background model of the CUPID-Mo 0 νββ experiment. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(7) [10.1140/epjc/s10052-023-11830-2].

The background model of the CUPID-Mo 0 νββ experiment

Beretta M.;Chiesa D.;Gironi L.;Pagnanini L.;Pattavina L.;Pavan M.;Pessina G.;Previtali E.;
2023

Abstract

CUPID-Mo, located in the Laboratoire Souterrain de Modane (France), was a demonstrator for the next generation 0 νββ decay experiment, CUPID. It consisted of an array of 20 enriched Li 2100 MoO 4 bolometers and 20 Ge light detectors and has demonstrated that the technology of scintillating bolometers with particle identification capabilities is mature. Furthermore, CUPID-Mo can inform and validate the background prediction for CUPID. In this paper, we present a detailed model of the CUPID-Mo backgrounds. This model is able to describe well the features of the experimental data and enables studies of the 2 νββ decay and other processes with high precision. We also measure the radio-purity of the Li 2100 MoO 4 crystals which are found to be sufficient for the CUPID goals. Finally, we also obtain a background index in the region of interest of 3.7 -0.8+0.9 (stat) -0.7+1.5 (syst) ×10-3 counts/ Δ EFWHM/ mol iso/ year , the lowest in a bolometric 0 νββ decay experiment.
Articolo in rivista - Articolo scientifico
Radioactivity, Double beta decay
English
28-lug-2023
2023
83
7
675
open
Augier, C., Barabash, A., Bellini, F., Benato, G., Beretta, M., Bergé, L., et al. (2023). The background model of the CUPID-Mo 0 νββ experiment. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(7) [10.1140/epjc/s10052-023-11830-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/450039
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