Journal Article

CUORE sensitivity to 0νββ decay

Lim, K. E., Hickerson, K. P., Benato, G., Clemenza, M., Sakai, M., Pira, C., Schmidt, B., Alduino, C., Chiesa, D., Bucci, C., Vignati, M., Pavan, M., Fujikawa, B. K., Rosenfeld, C., Sisti, M., Piperno, G., Taffarello, L., Singh, V., Avignone, F. T., Fernandes, G., Cushman, J. S., Chott, N., Zimmermann, S., Gladstone, L., Tomei, C., Giuliani, A., Wise, T., Di Vacri, M. L., Kadel, R., Wang, B. S., Carniti, P., Wagaarachchi, S. L., Freedman, S. J., Alfonso, K., Ouellet, J. L., Moggi, N., Creswick, R. J., Nastasi, M., Cardani, L., Pagliarone, C. E., Copello, S., Di Domizio, S., Morganti, S., Cao, X. G., Cappelli, L., Fang, D. Q., Nones, C., Giachero, A., Capelli, S., Hansen, E., Tenconi, M., Wang, H. W., Schmidt, J., Dell’Oro, S., Pettinacci, V., Fiorini, E., Pallavicini, M., Canonica, L., Banks, T. I., Santone, D., Gironi, L., Mosteiro, P. J., Welliver, B., Camacho, A., Maino, M., Pozzi, S., Zanotti, L., Leder, A., Woodcraft, A., D’Addabbo, A., Nucciotti, A., Ligi, C., Napolitano, T., Cremonesi, O., Artusa, D. R., Gotti, C., Brofferio, C., Ferri, E., Sangiorgio, S., Caminata, A., Bersani, A., O’Donnell, T., Pessina, G., Gutierrez, T. D., Novati, V., Belli

2017

Overview

We report a study of the CUORE sensitivity to neutrinoless double beta ( 0 ν β β ) decay. We used a Bayesian analysis based on a toy Monte Carlo (MC) approach to extract the exclusion sensitivity to the 0 ν β β decay half-life ( T 1 / 2 0 ν ) at 90 %  credibility interval (CI) – i.e. the interval containing the true value of T 1 / 2 0 ν with 90 % probability – and the 3 σ discovery sensitivity. We consider various background levels and energy resolutions, and describe the influence of the data division in subsets with different background levels. If the background level and the energy resolution meet the expectation, CUORE will reach a 90 %  CI exclusion sensitivity of 2 · 10 25  year with 3 months, and 9 · 10 25  year with 5 years of live time. Under the same conditions, the discovery sensitivity after 3 months and 5 years will be 7 · 10 24  year and 4 · 10 25  year, respectively.

• Publisher: Springer Berlin Heidelberg
• Subject: Astronomy / Astrophysics and Cosmology / Elementary Particles / Hadrons / Heavy Ions / Measurement Science and Instrumentation / Nuclear Energy / Nuclear Physics / Physics / Physics and Astronomy / Quantum Field Theories / Quantum Field Theory / Regular Article - Experimental Physics / String Theory