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

  • Author(s): Armengaud, E
  • Augier, C
  • Barabash, AS
  • Bellini, F
  • Benato, G
  • Benoît, A
  • Beretta, M
  • Bergé, L
  • Billard, J
  • Borovlev, YA
  • Bourgeois, C
  • Briere, M
  • Brudanin, V
  • Camus, P
  • Cardani, L
  • Casali, N
  • Cazes, A
  • Chapellier, M
  • Charlieux, F
  • de Combarieu, M
  • Dafinei, I
  • Danevich, FA
  • De Jesus, M
  • Dumoulin, L
  • Eitel, K
  • Elkhoury, E
  • Ferri, F
  • Fujikawa, BK
  • Gascon, J
  • Gironi, L
  • Giuliani, A
  • Grigorieva, VD
  • Gros, M
  • Guerard, E
  • Helis, DL
  • Huang, HZ
  • Huang, R
  • Johnston, J
  • Juillard, A
  • Khalife, H
  • Kleifges, M
  • Kobychev, VV
  • Kolomensky, YG
  • Konovalov, SI
  • Leder, A
  • Kotila, J
  • Loaiza, P
  • Ma, L
  • Makarov, EP
  • de Marcillac, P
  • Marini, L
  • Marnieros, S
  • Misiak, D
  • Navick, XF
  • Nones, C
  • Novati, V
  • Olivieri, E
  • Ouellet, JL
  • Pagnanini, L
  • Pari, P
  • Pattavina, L
  • Paul, B
  • Pavan, M
  • Peng, H
  • Pessina, G
  • Pirro, S
  • Poda, DV
  • Polischuk, OG
  • Previtali, E
  • Redon, T
  • Rozov, S
  • Rusconi, C
  • Sanglard, V
  • Schäffner, K
  • Schmidt, B
  • Shen, Y
  • Shlegel, VN
  • Siebenborn, B
  • Singh, V
  • Tomei, C
  • Tretyak, VI
  • Umatov, VI
  • Vagneron, L
  • Velázquez, M
  • Weber, M
  • Welliver, B
  • Winslow, L
  • Xue, M
  • Yakushev, E
  • Zolotarova, AS
  • et al.
Abstract

We report the measurement of the two-neutrino double-beta (2 νββ) decay of 100Mo to the ground state of 100Ru using lithium molybdate (Li2100MoO4) 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 of 100Mo is determined to be T1/22ν=[7.12-0.14+0.18(stat.)±0.10(syst.)]×1018 years. This is the most accurate determination of the 2 νββ half-life of 100Mo to date.

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