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First Results from CUORE: A Search for Lepton Number Violation via 0νββ Decay of ^{130}Te.

  • Author(s): Alduino, C
  • Alessandria, F
  • Alfonso, K
  • Andreotti, E
  • Arnaboldi, C
  • Avignone, FT
  • Azzolini, O
  • Balata, M
  • Bandac, I
  • Banks, TI
  • Bari, G
  • Barucci, M
  • Beeman, JW
  • 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, XG
  • 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, RJ
  • Cushman, JS
  • D'Addabbo, A
  • D'Aguanno, D
  • Dafinei, I
  • Datskov, V
  • Davis, CJ
  • Del Corso, F
  • Dell'Oro, S
  • Deninno, MM
  • Di Domizio, S
  • Di Vacri, ML
  • Di Paolo, L
  • Drobizhev, A
  • Ejzak, L
  • Faccini, R
  • Fang, DQ
  • Faverzani, M
  • Ferri, E
  • Ferroni, F
  • Fiorini, E
  • Franceschi, MA
  • Freedman, SJ
  • Fujikawa, BK
  • Gaigher, R
  • Giachero, A
  • Gironi, L
  • Giuliani, A
  • Gladstone, L
  • Goett, J
  • Gorla, P
  • Gotti, C
  • Guandalini, C
  • Guerzoni, M
  • Gutierrez, TD
  • Haller, EE
  • Han, K
  • Hansen, EV
  • Heeger, KM
  • Hennings-Yeomans, R
  • Hickerson, KP
  • Huang, HZ
  • Iannone, M
  • Ioannucci, L
  • Kadel, R
  • Keppel, G
  • Kogler, L
  • Kolomensky, Yu G
  • Leder, A
  • Ligi, C
  • Lim, KE
  • Liu, X
  • Ma, YG
  • Maiano, C
  • Maino, M
  • Marini, L
  • Martinez, M
  • Martinez Amaya, C
  • Maruyama, RH
  • Mei, Y
  • Moggi, N
  • Morganti, S
  • Mosteiro, PJ
  • Nagorny, SS
  • Napolitano, T
  • Nastasi, M
  • Nisi, S
  • Nones, C
  • Norman, EB
  • Novati, V
  • Nucciotti, A
  • Nutini, I
  • O'Donnell, T
  • Olcese, M
  • Olivieri, E
  • Orio, F
  • Orlandi, D
  • Ouellet, JL
  • Pagliarone, CE
  • 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, ND
  • Singh, V
  • Sisti, M
  • Smith, AR
  • Stivanello, F
  • Taffarello, L
  • Tatananni, L
  • Tenconi, M
  • Terranova, F
  • Tessaro, M
  • Tomei, C
  • Ventura, G
  • Vignati, M
  • Wagaarachchi, SL
  • Wallig, J
  • Wang, BS
  • Wang, HW
  • Welliver, B
  • Wilson, J
  • Wilson, K
  • Winslow, LA
  • Wise, T
  • Zanotti, L
  • Zarra, C
  • Zhang, GQ
  • Zhu, BX
  • Zimmermann, S
  • Zucchelli, S
  • CUORE Collaboration
  • et al.
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-number-violating process: ^{130}Te neutrinoless double-beta decay. Examining a total TeO_{2} exposure of 86.3 kg yr, characterized by an effective energy resolution of (7.7±0.5)  keV FWHM and a background in the region of interest of (0.014±0.002)  counts/(keV kg yr), we find no evidence for neutrinoless double-beta decay. Including systematic uncertainties, we place a lower limit on the decay half-life of T_{1/2}^{0ν}(^{130}Te)>1.3×10^{25}  yr (90% C.L.); the median statistical sensitivity of this search is 7.0×10^{24}  yr. Combining this result with those of two earlier experiments, Cuoricino and CUORE-0, we find T_{1/2}^{0ν}(^{130}Te)>1.5×10^{25}  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 m_{ββ}<(110-520)  meV, where the range reflects the nuclear matrix element estimates employed.

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