Charmed baryon decay asymmetry in e+e- annihilation

We propose to measure the decay asymmetry parameters in the hadronic weak decays of singly charmed baryons, such as $\ldc\to\ld\pi^+,\Sigma^0\pi^+,p \bar K_0$,$\Xi_c^0\to\Xi^-\pi^+$and$\Omega_c^0\to\Omega^-\pi^+$. The joint angular formulae for these processes are presented, and are used to extract the asymmetry parameters in $\text{ee}$ annihilation data. Base on the current $\text{ldc}$ data set collected at BESIII, we estimate the experimental sensitivities to measure the parameters ${\alpha }_{\text{ld}{\pi }^{+}}$ for $\text{ldc}\to \text{ld}{\pi }^{+}$, ${\alpha }_{{\mathrm{\Sigma }}^{+}{\pi }^0}$ for $\text{ldc}\to {\mathrm{\Sigma }}^{+}{\pi }^0$ and ${\alpha }_{\text{usig}{\pi }^{+}}$ for $\text{ldc}\to \text{usig}{\pi }^{+}$.