- Main
Improved Limit on Neutrinoless Double-Beta Decay in $^{130}$Te with CUORE
- Author(s): Collaboration, CUORE
- Adams, DQ
- Alduino, C
- Alfonso, K
- III, FT Avignone
- Azzolini, O
- Bari, G
- Bellini, F
- Benato, G
- Biassoni, M
- Branca, A
- Brofferio, C
- Bucci, C
- Caminata, A
- Campani, A
- Canonica, L
- Cao, XG
- Capelli, S
- Cappelli, L
- Cardani, L
- Carniti, P
- Casali, N
- Chiesa, D
- Chott, N
- Clemenza, M
- Copello, S
- Cosmelli, C
- Cremonesi, O
- Creswick, RJ
- D'Addabbo, A
- D'Aguanno, D
- Dafinei, I
- Davis, CJ
- Dell'Oro, S
- Domizio, S Di
- Dompè, V
- Fang, DQ
- Fantini, G
- Faverzani, M
- Ferri, E
- Ferroni, F
- Fiorini, E
- Franceschi, MA
- Freedman, SJ
- Fujikawa, BK
- Giachero, A
- Gironi, L
- Giuliani, A
- Gorla, P
- Gotti, C
- Gutierrez, TD
- Han, K
- Heeger, KM
- Huang, RG
- Huang, HZ
- Johnston, J
- Keppel, G
- Kolomensky, Yu G
- Ligi, C
- Ma, YG
- Ma, L
- Marini, L
- Maruyama, RH
- Mei, Y
- Moggi, N
- Morganti, S
- Napolitano, T
- Nastasi, M
- Nikkel, J
- Nones, C
- Norman, EB
- Novati, V
- Nucciotti, A
- Nutini, I
- O'Donnell, T
- Ouellet, JL
- Pagliarone, CE
- Pagnanini, L
- Pallavicini, M
- Pattavina, L
- 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, ND
- Sharma, V
- Singh, V
- Sisti, M
- Speller, D
- Taffarello, L
- Terranova, F
- Tomei, C
- Vignati, M
- Wagaarachchi, SL
- Wang, BS
- Welliver, B
- Wilson, J
- Wilson, K
- Winslow, LA
- Zanotti, L
- Zimmermann, S
- Zucchelli, S
- et al.
Abstract
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.