Yield of heavy hyperons and antihyperons in DIS

The yields of heavy hyperons and antihyperons have been studied in deep inelastic scattering at the COMPASS experiment at CERN. The data were collected in 2003-2004 using a 160 GeV polarised muon beam scattered off a large polarised $^{6}$LiD target. Signals from $\Sigma^{\pm}$(1385) and $\bar{\Sigma}^{\pm}$(1385) decays were reconstructed. The ratios of $\Sigma^{\pm}/\Lambda$, $\bar{\Sigma}^{\pm}/\bar{\Lambda}$ and $\Lambda/\bar{\Lambda}$ were determined. These ratios were used to tune parameters of the LEPTO generator. A comparison with the yields of the heavy hyperons in the low $Q^{2}$ region was done.