- Main
New measurement of double-β decays of Mo100 to excited states of Ru100 with the CUPID-Mo experiment
- Augier, C;
- Barabash, AS;
- Bellini, F;
- Benato, G;
- Beretta, M;
- Bergé, L;
- Billard, J;
- Borovlev, Yu A;
- Cardani, L;
- Casali, N;
- Cazes, A;
- Chapellier, M;
- Chiesa, D;
- Dafinei, I;
- Danevich, FA;
- De Jesus, M;
- Dixon, T;
- Dumoulin, L;
- Eitel, K;
- Ferri, F;
- Fujikawa, BK;
- Gascon, J;
- Gironi, L;
- Giuliani, A;
- Grigorieva, VD;
- Gros, M;
- Helis, DL;
- Huang, HZ;
- Huang, R;
- Imbert, L;
- Johnston, J;
- Juillard, A;
- Khalife, H;
- Kleifges, M;
- Kobychev, VV;
- Kolomensky, Yu G;
- Konovalov, SI;
- Kotila, J;
- Loaiza, P;
- Ma, L;
- Makarov, EP;
- de Marcillac, P;
- Mariam, R;
- Marini, L;
- Marnieros, S;
- Navick, X-F;
- Nones, C;
- Norman, EB;
- Olivieri, E;
- Ouellet, JL;
- Pagnanini, L;
- Pattavina, L;
- Paul, B;
- Pavan, M;
- Peng, H;
- Pessina, G;
- Pirro, S;
- Poda, DV;
- Polischuk, OG;
- Pozzi, S;
- Previtali, E;
- Redon, Th;
- Rojas, A;
- Rozov, S;
- Sanglard, V;
- Scarpaci, JA;
- Schmidt, B;
- Shen, Y;
- Shlegel, VN;
- Singh, V;
- Tomei, C;
- Tretyak, VI;
- Umatov, VI;
- Vagneron, L;
- Velázquez, M;
- Welliver, B;
- Winslow, L;
- Xue, M;
- Yakushev, E;
- Zarytskyy, M;
- Zolotarova, AS
- et al.
Published Web Location
https://doi.org/10.1103/physrevc.107.025503Abstract
The CUPID-Mo experiment, located at the Laboratoire Souterrain de Modane (France), was a demonstrator experiment for CUPID. It consisted of an array of 20Li2Mo100O4 (LMO) calorimeters, each equipped with a Ge light detector for particle identification. In this work, we present the result of a search for two-neutrino and neutrinoless double-β decays of Mo100 to the first 0+ and 2+ excited states of Ru100 using the full CUPID-Mo exposure (2.71kgyr of LMO). We measure the half-life of 2νββ decay to the 01+ state as T1/22ν→01+=(7.5±0.8(stat.)-0.3+0.4(syst.))×1020yr. The bolometric technique enables measurement of the electron energies as well as the γ rays from nuclear deexcitation and this allows us to set new limits on the two-neutrino decay to the 21+ state of T1/22ν→21+>4.4×1021yr(90% c.i.) and on the neutrinoless modes of T1/20ν→21+>2.1×1023yr(90% c.i.), T1/20ν→01+>1.2×1023yr(90% c.i.). Information on the electrons' spectral shape is obtained, which allows us to make the first comparison of the single and higher state dominance 2νββ decay models for the 01+ excited state of Ru100.
Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.