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  • Improved Limit on Neutrinol...
    Adams, D. Q.; Alduino, C.; Alfonso, K.; Avignone, F. T.; Azzolini, O.; Bellini, F.; Benato, G.; Biassoni, M.; Branca, A.; Bucci, C.; Caminata, A.; Campani, A.; Canonica, L.; Cao, X. G.; Capelli, S.; Cappelli, L.; Cardani, L.; Carniti, P.; Chiesa, D.; Chott, N.; Clemenza, M.; Copello, S.; Cosmelli, C.; Cremonesi, O.; Creswick, R. J.; D’Addabbo, A.; D’Aguanno, D.; Dafinei, I.; Dell’Oro, S.; Di Domizio, S.; Dompè, V.; Fang, D. Q.; Fantini, G.; Faverzani, M.; Ferri, E.; Ferroni, F.; Fiorini, E.; Franceschi, M. A.; Freedman, S. J.; Fujikawa, B. K.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gutierrez, T. D.; Han, K.; Heeger, K. M.; Huang, R. G.; Huang, H. Z.; Johnston, J.; Keppel, G.; Kolomensky, Yu. G.; Ligi, C.; Ma, Y. G.; Ma, L.; Marini, L.; Maruyama, R. H.; Mei, Y.; Moggi, N.; Morganti, S.; Napolitano, T.; Nastasi, M.; Nikkel, J.; Nones, C.; Norman, E. B.; Novati, V.; Nucciotti, A.; Nutini, I.; Ouellet, J. L.; Pagliarone, C. E.; Pagnanini, L.; Pallavicini, M.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pira, C.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Rosenfeld, C.; Rusconi, C.; Sakai, M.; Sangiorgio, S.; Schmidt, B.; Scielzo, N. D.; Singh, V.; Sisti, M.; Speller, D.; Surukuchi, P. T.; Terranova, F.; Tomei, C.; Vignati, M.; Wang, B. S.; Welliver, B.; Wilson, J.; Wilson, K.; Winslow, L. A.; Zanotti, L.; Zimmermann, S.

    Physical review letters, 03/2020, Letnik: 124, Številka: 12
    Journal Article

    We report new results from the search for neutrinoless double-beta decay in $^{130}$Te with the CUORE detector. This search benefits from a four-fold increase in exposure, lower trigger thresholds and analysis improvements relative to our previous results. We observe a background of $(1.38\pm0.07)\cdot10^{-2}$ counts$/($keV$\cdot$kg$\cdot$yr$)$ in the $0\nu\beta\beta$ decay region of interest and, with a total exposure of 372.5 kg$\cdot$yr, we attain a median exclusion sensitivity of $1.7\cdot10^{25}$ yr. We find no evidence for $0\nu\beta\beta$ decay and set a $90\%$ CI Bayesian lower limit of $3.2\cdot10^{25}$ yr on the $^{130}$Te half-life for this process. In the hypothesis that $0\nu\beta\beta$ decay is mediated by light Majorana neutrinos, this results in an upper limit on the effective Majorana mass of 75-350 meV, depending on the nuclear matrix elements used.