  We measure the inclusive production cross sections of hyperons and charmed
baryons from $e^+e^-$ annihilation using a 800 fb$^{-1}$ data sample taken near
the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB
asymmetric-energy $e^+ e^-$ collider. The feed-down contributions from heavy
particles are subtracted using our data, and the direct production cross
sections are presented for the first time. The production cross sections
divided by the number of spin states for $S=-1$ hyperons follow an exponential
function with a single slope parameter except for the $\Sigma(1385)^+$
resonance. Suppression for $\Sigma(1385)^+$ and $\Xi(1530)^0$ hyperons is
observed. Among the production cross sections of charmed baryons, a factor of
three difference for $\Lambda_c^+$ states over $\Sigma_c$ states is observed.
This observation suggests a diquark structure for these baryons.

High Energy Physics - Experiment