Comparative study of the inclusive asymmetries induced by polarized protons and antiprotons at 16 GeV/$c$ at the U-70 accelerator

The only comparative study of the inclusive pion single-spin asymmetries produced in the interactions of the polarized protons and antiprotons in collisions with unpolarized proton was carried out at E-704 experiment. Significant asymmetries were found at large $x_{F}$ and middle $p_{T}$, $pi^{+}$ and $pi^{0}$ asymmetries have positive signs while $pi^{-}$ has negative one in the $p^{uparrow}+p$ collisions, while in the $bar{p}^{uparrow}+p$ interactions the $pi^{-}$ and $pi^{0}$ asymmetries have positive signs while $pi^{+}$ has negative sign. Similar experimental study can be done in the SPASCHARM experiment at U-70 accelerator at IHEP for various secondary particles with the use of 16 GeV polarized proton and antiproton beams.