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×yr of Se82. We identify with improved precision the background sources within the 3 MeV energy region, where neutrinoless double β decay of Se82 and Mo100 is expected, making more solid the foundations for the background budget of the next-generation CUPID experiment. Relying on the excellent data reconstruction, we measure the two-neutrino double β-decay half-life of Se82 with unprecedented accuracy: T1/22ν=[8.69±0.05(stat)(-0.06+0.09syst)]×1019 yr.
Measurement of the 2νββ Decay Half-Life of Se 82 with the Global CUPID-0 Background Model
Capelli S.;Colantoni I.;D'Addabbo A.;Di Domizio S.;Giuliani A.;Gotti C.;Tomei C.;
2023
Abstract
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×yr of Se82. We identify with improved precision the background sources within the 3 MeV energy region, where neutrinoless double β decay of Se82 and Mo100 is expected, making more solid the foundations for the background budget of the next-generation CUPID experiment. Relying on the excellent data reconstruction, we measure the two-neutrino double β-decay half-life of Se82 with unprecedented accuracy: T1/22ν=[8.69±0.05(stat)(-0.06+0.09syst)]×1019 yr.| File | Dimensione | Formato | |
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