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Pattavina, M. Beretta, M. Biassoni, M. Clemenza, M. Martinez, M. Nastasi, M. Pallavicini, M. Pavan, M. Vignati, N. Casali, O. Azzolini, O. Cremonesi, P. Carniti, P. Gorla, S. Capelli, S. Di Domizio, S. Nisi, S. Pirro, S. Pozzi, S. S. Nagorny, V. Caracciolo, V. Domp\\`e, V. Pettinacci","submitted_at":"2023-06-26T12:47:18Z","abstract_excerpt":"We report on the results obtained with the global CUPID-0 background model, which combines the data collected in the two measurement campaigns for a total exposure of 8.82~kg$\\times$yr of $^{82}$Se. We identify with improved precision the background sources within the 3 MeV energy region, where neutrinoless double $\\beta$-decay of $^{82}$Se and $^{100}$Mo is expected, making more solid the foundations for the background budget of the next-generation CUPID experiment. 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