Accès ouvert déclaré
2018
article
First Results from CUORE: A Search for Lepton Number Violation via 0νββ Decay of [superscript 130]Te
C. Alduino, F. Alessandria, K. Alfonso, Erica Andreotti, Claudio Arnaboldi, Frank T. Avignone III, O. Azzolini, Marco Balata, I. Bandac, Thomas I. Banks, Giacomo Bari, M. Barucci, J. W. Beeman, Fabio Bellini, G. Benato, A. Bersani, D. Biare, M. Biassoni, F. Bragazzi, Antonio Branca, C. Brofferio, A. Bryant, A. Buccheri, C. Bucci, C. Bulfon, A. Camacho, A. Caminata, X. G. Cao, S. Capelli, M. Capodiferro, Luigi Cappelli, L. Cardani, M. Cariello, P. Carniti, M. Carrettoni, N. Casali, L. Cassina, R. Cereseto, G. Ceruti, Alberto Chiarini, D. Chiesa, N. Chott, M. Clemenza, D. Conventi, Simone Copello, C. Cosmelli, O. Cremonesi, C. Crescentini, R. J. Creswick, Jeremy S. Cushman, Antonio D’Addabbo, Damiano D’Aguanno, Ioan Dafinei, V. Datskov, Christopher J. Davis, F. Del Corso, Stefano Dell'Oro, M. M. Deninno, S. Di Domizio, M. L. di Vacri, P. Lenisa, Alexey Drobizhev, Larissa M. Ejzak, R. Faccini, D. Q. Fang, M. Faverzani, E. Ferri, F. Ferroni, E. Fiorini, A. Franceschi, S. J. Freedman, Brian K. Fujikawa, R. Gaigher, Andrea Giachero, L. Gironi, Andrea Giuliani, J. Goett, P. Gorla, C. Gotti, Cristina Guandalini, Maria Elisabetta Guerzoni, T. D. Gutierrez, E. E. Haller, Kecen Han, Karsten M. Heeger, Raul Hennings-Yeomans, K. P. Hickerson, H. Z. Huang, M. Iannone, Luca Ioannucci, Richard W. Kadel, Giorgio Keppel, L. Kogler, Yu. G. Kolomensky, Carlo Ligi, K. E. Lim, X. Liu, Y. G., CECILIA GIOVANNA MAIANO, M. Maino, L. Marini, María Luz Peñas Martínez, C. Martinez Amaya, Reina H. Maruyama, Y. Mei, N. Moggi, S. Morganti, P. J. Mosteiro, Serge S. Nagorny, T. Napolitano, M. Nastasi, S. Nisi, Claudia Nones, E. B. Norman, V. Novati, Angelo Nucciotti, I. Nutini, Thomas O’Donnell, Marco Olcese, E. Olivieri, F. Orio, D. Orlandi, C. Pagliarone, Marco Pallavicini, V. Palmieri, L. Pattavina, Maura Pavan, M. Pedretti, R. Pedrotta, A. Pelosi, G. Pessina, V. Pettinacci, G. Piperno, Cristian Pira, Stefano Pirro, S. Pozzi, E. Previtali, F. Reindl, F. Rimondi, L. Risegari, Carlos Luis Rosenfeld, C. Rossi, Claudia Rusconi, M. Sakai, E. Sala, Chiara Salvioni, S. Sangiorgio, D. Santone, David J. Schaeffer, B. Schmidt, J. Schmidt, N. D. Scielzo, V. Singh, Monica Sisti, A. R. Smith, F. Stivanello, L. Taffarello, L. Tatananni, Margherita Tenconi, Francesco Terranova, Mario Tessaro, C. Tomei, G. Ventura, M. Vignati, S. L. Wagaarachchi, J. G. Wallig, B. S. Wang, H. W. Wang, Bradford Welliver, John E. Wilson, Kevin Wilson, T. Wise, Luigi Zanotti, C. Zarra, G. Q. Zhang, Brian Xiaoyu Zhu, S. Zimmermann, S. Zucchelli, Lucia Canonica, Laura Gladstone, E. V. Hansen, A. Leder, Jonathan Ouellet, L. A. Winslow
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Le résumé fourni par la source
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: [superscript 130]Te neutrinoless double-beta decay. Examining a total TeO[subscript 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[subscript 1/2][supsercript 0ν]([superscript 130]Te)>1.3×10[superscript 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[subscript 1/[superscript 0ν]([superscript 130]Te)>1.5×10[superscript 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[subscript ββ]<(110-520) meV, where the range reflects the nuclear matrix element estimates employed.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Particle physics theoretical and experimental studiesInternational Science and DiplomacyNeutrino Physics Research