Transverse ${\mathrm{\Lambda }}^0$ polarization in inclusive quasi-real photoproduction: quark scattering model

The transverse polarization of ${\mathrm{\Lambda }}^0$ hyperons produced in the inclusive $ep$ reaction at the 27.6 GeV beam energy is assumed to appear mostly via scattering of the strange quark in a color field. Results of application of such an idea to the preliminary data of HERMES are presented. Contributions of ${\mathrm{\Sigma }}^0$, $\mathrm{\Xi }$, and ${\mathrm{\Sigma }}^{\ast }$ resonances to the polarization are taken into account.