Abstract
The indication for the decay of with a half-life yr has been observed for the first time with the help of the superlow background crystal scintillators. In a conservative approach the lower limit on half-life of has been established as yr at 90% C.L. In addition, new bounds were set for decay of and at the level of yr.
- Received 29 April 2002
DOI:https://doi.org/10.1103/PhysRevC.67.014310
©2003 American Physical Society