New limit for neutrinoless double-beta decay of Mo 100 from the CUPID-Mo experiment

Armengaud, E.; Augier, C.; Barabash, A. S.; Bellini, F.; Benato, G.; Benoit, A.; Beretta, M.; Berge, L.; Billard, J.; Borovlev, Y. A.; Bourgeois, C.; Brudanin, V. B.; Camus, P.; Cardani, L.; Casali, N.; Cazes, A.; Chapellier, M.; Charlieux, F.; Chiesa, D.; De Combarieu, M.; Dafinei, I.; Danevich, F. A.; De Jesus, M.; Dixon, T.; Dumoulin, L.; Eitel, K.; Ferri, F.; Fujikawa, B. K.; Gascon, J.; Gironi, L.; Giuliani, A.; Grigorieva, V. D.; Gros, M.; Guerard, E.; Helis, D. L.; Huang, H. Z.; Huang, R.; Johnston, J.; Juillard, A.; Khalife, H.; Kleifges, M.; Kobychev, V. V.; Kolomensky, Y. G.; Konovalov, S. I.; Leder, A.; Loaiza, P.; Ma, L.; Makarov, E. P.; De Marcillac, P.; Mariam, R.; Marini, L.; Marnieros, S.; Misiak, D.; Navick, X. -F.; Nones, C.; Norman, E. B.; Novati, V.; Olivieri, E.; Ouellet, J. L.; Pagnanini, L.; Pari, P.; Pattavina, L.; Paul, B.; Pavan, M.; Peng, H.; Pessina, G.; Pirro, S.; Poda, D. V.; Polischuk, O. G.; Pozzi, S.; Previtali, E.; Redon, T.; Rojas, A.; Rozov, S.; Rusconi, C.; Sanglard, V.; Scarpaci, J. A.; Schaffner, K.; Schmidt, B.; Shen, Y.; Shlegel, V. N.; Siebenborn, B.; Singh, V.; Tomei, C.; Tretyak, V. I.; Umatov, V. I.; Vagneron, L.; Velazquez, M.; Welliver, B.; Winslow, L.; Xue, M.; Yakushev, E.; Zarytskyy, M.; Zolotarova, A. S.

doi:10.1103/PhysRevLett.126.181802

The CUPID-Mo experiment at the Laboratoire Souterrain de Modane (France) is a demonstrator for CUPID, the next-generation ton-scale bolometric 0νββ experiment. It consists of a 4.2 kg array of 20 enriched Li2Mo100O4 scintillating bolometers to search for the lepton-number-violating process of 0νββ decay in Mo100. With more than one year of operation (Mo100 exposure of 1.17 kg×yr for physics data), no event in the region of interest and, hence, no evidence for 0νββ is observed. We report a new limit on the half-life of 0νββ decay in Mo100 of T1/2>1.5×1024 yr at 90% C.I. The limit corresponds to an effective Majorana neutrino mass ⟨mββ

New limit for neutrinoless double-beta decay of Mo 100 from the CUPID-Mo experiment / Armengaud, E., Augier, C., Barabash, A.S., Bellini, F., Benato, G., Benoit, A., Beretta, M., Berge, L., Billard, J., Borovlev, Y.A., Bourgeois, C., Brudanin, V.B., Camus, P., Cardani, L., Casali, N., Cazes, A., Chapellier, M., Charlieux, F., Chiesa, D., De Combarieu, M., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 126:18(2021), p. 181802. [10.1103/PhysRevLett.126.181802]