The CUORE experiment, a ton-scale cryogenic bolometer array, recently began operation at the Laboratori Nazionali del Gran Sasso in Italy. The array represents a significant advancement in this technology, and in this work we apply it for the first time to a high-sensitivity search for a lepton-numberviolating process: 130Te neutrinoless double-beta decay. Examining a total TeO2 exposure of 86.3 kg yr, characterized by an effective energy resolution of d7.7 ± 0.5T keV FWHM and a background in the region of interest of d0.014 ± 0.002T counts=dkeV kg yrT, we find no evidence for neutrinoless double-beta decay. Including systematic uncertainties, we place a lower limit on the decay half-life of T0ν1/2 (130Te) > 1.3 × 1025 yr (90% C.L.); the median statistical sensitivity of this search is 7.0 × 1024 yr. Combining this result with those of two earlier experiments, Cuoricino and CUORE-0, we find T0ν1/2 (130Te) > 1.5 × 1025 yr (90% C.L.), which is the most stringent limit to date on this decay. Interpreting this result as a limit on the effective Majorana neutrino mass, we find mββ < (110 - 520) meV, where the range reflects the nuclear matrix element estimates employed.

Alduino, C., Alessandria, F., Alfonso, K., Andreotti, E., Arnaboldi, C., Avignone, F., et al. (2018). First results from CUORE: A search for lepton number violation via 0νββ decay of 130Te. PHYSICAL REVIEW LETTERS, 120(13) [10.1103/PhysRevLett.120.132501].

First results from CUORE: A search for lepton number violation via 0νββ decay of 130Te

Arnaboldi, C.;Biassoni, M.;Branca, A.;Brofferio, C.;Capelli, S.;Carniti, P.;Cassina, L.;Chiesa, D.;Clemenza, M.;Cremonesi, O.
;
Dell’Oro, S.;Faverzani, M.;Ferri, E.;Fiorini, E.;Giachero, A.;Gironi, L.;Gorla, P.;Gotti, C.;Nastasi, M.;Nones, C.;Nucciotti, A.;Nutini, I.;Pattavina, L.;Pavan, M.;Pessina, G.;Pozzi, S.;Previtali, E.;SCHAEFFER, DAVID;Sisti, M.;Terranova, F.;Zanotti, L.;
2018

Abstract

The CUORE experiment, a ton-scale cryogenic bolometer array, recently began operation at the Laboratori Nazionali del Gran Sasso in Italy. The array represents a significant advancement in this technology, and in this work we apply it for the first time to a high-sensitivity search for a lepton-numberviolating process: 130Te neutrinoless double-beta decay. Examining a total TeO2 exposure of 86.3 kg yr, characterized by an effective energy resolution of d7.7 ± 0.5T keV FWHM and a background in the region of interest of d0.014 ± 0.002T counts=dkeV kg yrT, we find no evidence for neutrinoless double-beta decay. Including systematic uncertainties, we place a lower limit on the decay half-life of T0ν1/2 (130Te) > 1.3 × 1025 yr (90% C.L.); the median statistical sensitivity of this search is 7.0 × 1024 yr. Combining this result with those of two earlier experiments, Cuoricino and CUORE-0, we find T0ν1/2 (130Te) > 1.5 × 1025 yr (90% C.L.), which is the most stringent limit to date on this decay. Interpreting this result as a limit on the effective Majorana neutrino mass, we find mββ < (110 - 520) meV, where the range reflects the nuclear matrix element estimates employed.
Articolo in rivista - Review Essay
Neutrinoless double beta decay
English
Alduino, C., Alessandria, F., Alfonso, K., Andreotti, E., Arnaboldi, C., Avignone, F., et al. (2018). First results from CUORE: A search for lepton number violation via 0νββ decay of 130Te. PHYSICAL REVIEW LETTERS, 120(13) [10.1103/PhysRevLett.120.132501].
Alduino, C; Alessandria, F; Alfonso, K; Andreotti, E; Arnaboldi, C; Avignone, F; Azzolini, O; Balata, M; Bandac, I; Banks, T; Bari, G; Barucci, M; Beeman, J; Bellini, F; Benato, G; Bersani, A; Biare, D; Biassoni, M; Bragazzi, F; Branca, A; Brofferio, C; Bryant, A; Buccheri, A; Bucci, C; Bulfon, C; Camacho, A; Caminata, A; Canonica, L; Cao, X; Capelli, S; Capodiferro, M; Cappelli, L; Cardani, L; Cariello, M; Carniti, P; Carrettoni, M; Casali, N; Cassina, L; Cereseto, R; Ceruti, G; Chiarini, A; Chiesa, D; Chott, N; Clemenza, M; Conventi, D; Copello, S; Cosmelli, C; Cremonesi, O; Crescentini, C; Creswick, R; Cushman, J; D’Addabbo, A; D’Aguanno, D; Dafinei, I; Datskov, V; Davis, C; Del Corso, F; Dell’Oro, S; Deninno, M; Di Domizio, S; Di Vacri, M; Di Paolo, L; Drobizhev, A; Ejzak, L; Faccini, R; Fang, D; Faverzani, M; Ferri, E; Ferroni, F; Fiorini, E; Franceschi, M; Freedman, S; Fujikawa, B; Gaigher, R; Giachero, A; Gironi, L; Giuliani, A; Gladstone, L; Goett, J; Gorla, P; Gotti, C; Guandalini, C; Guerzoni, M; Gutierrez, T; Haller, E; Han, K; Hansen, E; Heeger, K; Hennings-Yeomans, R; Hickerson, K; Huang, H; Iannone, M; Ioannucci, L; Kadel, R; Keppel, G; Kogler, L; Kolomensky, Y; Leder, A; Ligi, C; Lim, K; Liu, X; Ma, Y; Maiano, C; Maino, M; Marini, L; Martinez, M; Martinez Amaya, C; Maruyama, R; Mei, Y; Moggi, N; Morganti, S; Mosteiro, P; Nagorny, S; Napolitano, T; Nastasi, M; Nisi, S; Nones, C; Norman, E; Novati, V; Nucciotti, A; Nutini, I; O’Donnell, T; Olcese, M; Olivieri, E; Orio, F; Orlandi, D; Ouellet, J; Pagliarone, C; Pallavicini, M; Palmieri, V; Pattavina, L; Pavan, M; Pedretti, M; Pedrotta, R; Pelosi, A; Pessina, G; Pettinacci, V; Piperno, G; Pira, C; Pirro, S; Pozzi, S; Previtali, E; Reindl, F; Rimondi, F; Risegari, L; Rosenfeld, C; Rossi, C; Rusconi, C; Sakai, M; Sala, E; Salvioni, C; Sangiorgio, S; Santone, D; Schaeffer, D; Schmidt, B; Schmidt, J; Scielzo, N; Singh, V; Sisti, M; Smith, A; Stivanello, F; Taffarello, L; Tatananni, L; Tenconi, M; Terranova, F; Tessaro, M; Tomei, C; Ventura, G; Vignati, M; Wagaarachchi, S; Wallig, J; Wang, B; Wang, H; Welliver, B; Wilson, J; Wilson, K; Winslow, L; Wise, T; Zanotti, L; Zarra, C; Zhang, G; Zhu, B; Zimmermann, S; Zucchelli, S
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