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

C. Alduino, F. Alessandria, K. Alfonso, E. Andreotti, C. Arnaboldi, F. T. Avignone, O. Azzolini, M. Balata, I. Bandac, T. I. Banks, G. Bari, M. Barucci, J. W. Beeman, F. Bellini, G. Benato, A. Bersani, D. Biare, M. Biassoni, F. Bragazzi, A. BrancaC. Brofferio, A. Bryant, A. Buccheri, C. Bucci, C. Bulfon, A. Camacho, A. Caminata, L. Canonica, X. G. Cao, S. Capelli, M. Capodiferro, L. Cappelli, L. Cardani, M. Cariello, P. Carniti, M. Carrettoni, N. Casali, L. Cassina, R. Cereseto, G. Ceruti, A. Chiarini, D. Chiesa, N. Chott, M. Clemenza, D. Conventi, S. Copello, C. Cosmelli, O. Cremonesi, C. Crescentini, R. J. Creswick, J. S. Cushman, A. D'Addabbo, D. D'Aguanno, I. Dafinei, V. Datskov, C. J. Davis, F. Del Corso, S. Dell'Oro, M. M. Deninno, S. Di Domizio, M. L. Di Vacri, L. Di Paolo, A. Drobizhev, L. Ejzak, R. Faccini, D. Q. Fang, M. Faverzani, E. Ferri, F. Ferroni, E. Fiorini, M. A. Franceschi, S. J. Freedman, B. K. Fujikawa, R. Gaigher, A. Giachero, L. Gironi, A. Giuliani, L. Gladstone, J. Goett, P. Gorla, C. Gotti, C. Guandalini, M. Guerzoni, T. D. Gutierrez, E. E. Haller, K. Han, E. V. Hansen, K. M. Heeger, R. Hennings-Yeomans, K. P. Hickerson, H. Z. Huang, M. Iannone, L. Ioannucci, R. Kadel, G. Keppel, L. Kogler, Yu G. Kolomensky, A. Leder, C. Ligi, K. E. Lim, X. Liu, Y. G. Ma, C. Maiano, M. Maino, L. Marini, M. Martinez, C. Martinez Amaya, R. H. Maruyama, Y. Mei, N. Moggi, S. Morganti, P. J. Mosteiro, S. S. Nagorny, T. Napolitano, M. Nastasi, S. Nisi, C. Nones, E. B. Norman, V. Novati, A. Nucciotti, I. Nutini, T. O'Donnell, M. Olcese, E. Olivieri, F. Orio, D. Orlandi, J. L. Ouellet, C. E. Pagliarone, M. Pallavicini, V. Palmieri, L. Pattavina, M. Pavan, M. Pedretti, R. Pedrotta, A. Pelosi, G. Pessina, V. Pettinacci, G. Piperno, C. Pira, S. Pirro, S. Pozzi, E. Previtali, F. Reindl, F. Rimondi, L. Risegari, C. Rosenfeld, C. Rossi, C. Rusconi, M. Sakai, E. Sala, C. Salvioni, S. Sangiorgio, D. Santone, D. Schaeffer, B. Schmidt, J. Schmidt, N. D. Scielzo, V. Singh, M. Sisti, A. R. Smith, F. Stivanello, L. Taffarello, L. Tatananni, M. Tenconi, F. Terranova, M. Tessaro, C. Tomei, G. Ventura, M. Vignati, S. L. Wagaarachchi, J. Wallig, B. S. Wang, H. W. Wang, B. Welliver, J. Wilson, K. Wilson, L. A. Winslow, T. Wise, L. Zanotti, C. Zarra, G. Q. Zhang, B. X. Zhu, S. Zimmermann, S. Zucchelli

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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 T1/2 (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 T1/2 (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.

Original languageEnglish (US)
Article number132501
JournalPhysical Review Letters
Volume120
Issue number13
DOIs
StatePublished - 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Alduino, C., Alessandria, F., Alfonso, K., Andreotti, E., Arnaboldi, C., Avignone, F. T., Azzolini, O., Balata, M., Bandac, I., Banks, T. I., Bari, G., Barucci, M., Beeman, J. W., Bellini, F., Benato, G., Bersani, A., Biare, D., Biassoni, M., Bragazzi, F., ... Zucchelli, S. (2018). First results from CUORE: A search for lepton number violation via 0νββ decay of 130Te. Physical Review Letters, 120(13), [132501]. https://doi.org/10.1103/PhysRevLett.120.132501