Abstract
The mean lives of the and mesons are determined by measurements of the attenuation in flight of a 73-Mev meson beam, using a scintillation counter telescope of variable length. The decay scheme, , is assumed to be isotropic in the rest system of the -meson. The data, when the Lorentz time dilation is taken into account, give for the mean lives at rest
- Received 25 June 1952
DOI:https://doi.org/10.1103/PhysRev.88.179
©1952 American Physical Society