Measurement of the 2vßß Decay Half-Life of <sup>82Se with the Global CUPID-0 Background Model

Azzolini, O. ; Beeman, J.W. ; Bellini, F. ; Beretta, M. ; Biassoni, M. ; Brofferio, C. ; Bucci, C. ; Capelli, S. ; Caracciolo, V. ; Cardani, L. ; Carniti, P. ; Casali, N. ; Celi, E. ; Chiesa, D. ; Clemenza, M. ; Colantoni, I. ; Cremonesi, O. ; Cruciani, A. ; D’Addabbo, A. ; Dafinei, I. ; Di Domizio, S. ; Dompè, V. ; Fantini, G. ; Ferroni, F. ; Gironi, L. ; Giuliani, A. ; Gorla, P. ; Gotti, C. ; Keppel, G. ; Kotila, J. ; Martinez, M. (Universidad de Zaragoza) ; Nagorny, S. S. ; Nastasi, M. ; Nisi, S. ; Nones, C. ; Orlandi, D. ; Pagnanini, L. ; Pallavicini, M. ; Pattavina, L. ; Pavan, M. ; Pessina, G. ; Pettinacci, V. ; Pirro, S. ; Pozzi, S. ; Previtali, E. ; Puiu, A. ; Ressa, A. ; Rusconi, C. ; Schäffner, K. ; Tomei, C. ; Vignati, M. ; Zolotarova, A. S.

Resumen: 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 ^{82Se. We identify with improved precision the background sources within the 3 MeV energy region, where neutrinoless double β decay of 82Se and 100Mo 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 82Se with unprecedented accuracy: T82_{1/2 = [8.69±0.05(stat)+0.09−0.06(syst)] × 1019 yr.}}

Idioma: Inglés

DOI: 10.1103/PhysRevLett.131.222501

Año: 2023

Publicado en: Physical Review Letters 131, 22 (2023), 222501 [6 pp.]
ISSN: 0031-9007

Factor impacto JCR: 8.1 (2023)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 8 / 112 = 0.071 (2023) - Q1 - T1

Factor impacto CITESCORE: 16.5 - Physics and Astronomy (all) (Q1)

Factor impacto SCIMAGO: 3.04 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/247115/EU/Low-background Underground Cryogenic Installation For Elusive Rates/LUCIFER

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)