Journal Article

Precise measurement of 2vbetabeta decay of 100Mo with the CUPID-Mo detection technology

Kolomensky, Yu.G., Winslow, L., Juillard, A., Benato, G., Johnston, J., Schmidt, B., Tretyak, V.I., de Combarieu, M., Augier, C., Danevich, F.A., Gironi, L., Welliver, B., Camus, P., Eitel, K., Borovlev, Yu.A., Loaiza, P., Ouellet, J.L., Leder, A., Fujikawa, B.K., Huang, H.Z., Shlegel, V.N., Kobychev, V.V., Marnieros, S., Kotila, J., Pavan, M., Poda, D.V., Pari, P., Redon, Th, Misiak, D., Kleifges, M., Pessina, G., Vagneron, L., Billard, J., Charlieux, F., Yakushev, E., Guerard, E., Sanglard, V., Novati, V., Singh, V., Bellini, F., Beretta, M., Xue, M., Helis, D.L., Pagnanini, L., Benoît, A., Olivieri, E., Khalife, H., Weber, M., Zolotarova, A.S., Schäffner, K., Makarov, E.P., Dafinei, I., Previtali, E., Siebenborn, B., Peng, H., Shen, Y., de Marcillac, P., de Jesus, M., Tomei, C., Velázquez, M., Huang, R., Gascon, J., Bergé, L., Paul, B., Rozov, S., Umatov, V.I., Grigorieva, V.D., Pirro, S., Barabash, A.S., Ma, L., Navick, X-F., Pattavina, L., Cazes, A., Rusconi, C., Brudanin, V., Chapellier, M., Dumoulin, L., Giuliania, A., Gros, M., Cardani, L., Casali, N., Briere, M., Elkhoury, E., Konovalov, S.I., Marini, L., Nones, C., Armengaud, E., Bourgeois, Ch, Pol

2020

Overview

We report the measurement of the two-neutrino double-beta ( 2ν β β ) decay of¹⁰⁰ Mo to the ground state of¹⁰⁰ Ru using lithium molybdate ( \\hbox Li₂¹⁰⁰\\hbox MoO₄ ) scintillating bolometers. The detectors were developed for the CUPID-Mo program and operated at the EDELWEISS-III low background facility in the Modane underground laboratory (France). From a total exposure of 42.235 kg × day, the half-life of¹⁰⁰ Mo is determined to beT_(1/2)^(2ν)=[7.12^(+0.18)_(-0.14) \\mathrm (stat.)± 0.10 \\mathrm (syst.)]× 10¹⁸  years. This is the most accurate determination of the2ν β β half-life of¹⁰⁰ Mo to date.

• Publisher: Springer Verlag (Germany)
• Subject: Instrumentation and Detectors / Nuclear Experiment / Physics