학술논문
The background model of the CUPID-Mo 0νββ experiment
Document Type
article
Author
Augier, C; Barabash, AS; Bellini, F; Benato, G; Beretta, M; Bergé, L; Billard, J; Borovlev, Yu A; Cardani, L; Casali, N; Cazes, A; Celi, E; Chapellier, M; Chiesa, D; Dafinei, I; Danevich, FA; De Jesus, M; de Marcillac, P; Dixon, T; Dumoulin, L; Eitel, K; Ferri, F; Fujikawa, BK; Gascon, J; Gironi, L; Giuliani, A; Grigorieva, VD; Gros, M; Helis, DL; Huang, HZ; Huang, R; Imbert, L; Johnston, J; Juillard, A; Khalife, H; Kleifges, M; Kobychev, VV; Kolomensky, Yu G; Konovalov, SI; Kotila, J; Loaiza, P; Ma, L; Makarov, EP; Mariam, R; Marini, L; Marnieros, S; Navick, X-F; Nones, C; Norman, EB; Olivieri, E; Ouellet, JL; Pagnanini, L; Pattavina, L; Paul, B; Pavan, M; Peng, H; Pessina, G; Pirro, S; Poda, DV; Polischuk, OG; Pozzi, S; Previtali, E; Redon, Th; Rojas, A; Rozov, S; Sanglard, V; Scarpaci, JA; Schmidt, B; Shen, Y; Shlegel, VN; Singh, V; Tomei, C; Tretyak, VI; Umatov, VI; Vagneron, L; Velázquez, M; Welliver, B; Winslow, L; Xue, M; Yakushev, E; Zarytskyy, M; Zolotarova, AS
Source
European Physical Journal C. 83(7)
Subject
Language
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.