Measurement of the asymmetry parameter for the decay $\bar{\Lambda }\to \bar{p}{\pi }^{+}$

BES collaboration

Based on a sample of $58\times 10^{6}J/\psi$ decays collected with the BESII detector at the BEPC, the $\bar{\Lambda }$ decay parameter ${\alpha }_{\bar{\Lambda }}$ for $\bar{\Lambda }\to \bar{p}{\pi }^{+}$ is measured using abo…