CUPID-Mo: A World Leading Limit on Neutrinoless Double Beta Decay of ${}^{\mathbf{100}}$Mo

International audienceThe CUPID-Mo experiment, located in the Laboratoire Souterrain de Modane (France), is a demonstrator for the next generation ton-scale bolometric neutrinoless double beta decay experiment CUPID. CUPID-Mo is composed of 20 Li${}_{2}^{100}$MoO${}_{4}$ scintillating bolometers, searching for $0\nu\beta\beta$ of ${}^{100}$Mo. With about one year of data acquisition we set a world leading limit on the half-life of $0\nu\beta\beta$ decay in ${}^{100}$Mo of $T_{1/2}>1.8\times 10^{24}$ yr at 90$\%$ C.I. This limit corresponds to an effective Majorana mass $m_{\beta\beta}<(0.28{-}0.49)$ eV, dependent on the nuclear matrix element in the light Majorana neutrino exchange interpretation