New Limit for Neutrinoless DoubleβDecay ofGe76

A new lower limit of 3.2×${10}^{22}$ yr has been obtained for the half-life of neutrinoless double $\beta$ decay of ${}_{}{}^{76}{}_{}{}^{}\mathrm{Ge}$ to the ground state of ${}_{}{}^{76}{}_{}{}^{}\mathrm{Se}$, by use of a Ge detector of 208 ${\mathrm{cm}}^3$ active volume running in a salt mine for 2363 h. This is the largest detector used to date in such an experiment. A limit for decay to the first excited state has also been obtained.