Charmed particle production in hadron-hadron collision

In the framework of Quark–Gluon–String Model developed recently in ITEP we calculate spectra of charmed particles $D$, $D_s$, ${\mathrm{\Lambda }}_c$, ${\mathrm{\Xi }}_c$, ${\mathrm{\Omega }}_c$ in hadron–hadron collisions taking into account the decays of $S$–wave resonances like $D^{\ast }$, $D_s^{\ast }$, ${\mathrm{\Sigma }}_c$, ${\mathrm{\Sigma }}_c^{\ast }$, ${\mathrm{\Xi }}_c^{\ast }$, ${\mathrm{\Xi }}_c^{\mathrm{\prime }}$, and ${\mathrm{\Omega }}_c^{\ast }$. We describe the bulk of the existing data on $D$, $D^{\ast }$, and ${\mathrm{\Lambda }}_c$ production in $\pi p$ and $pp$ collisions and predict the yield of charmed particles in ${\mathrm{\Sigma }}^{-}p$ and ${\mathrm{\Xi }}^{-}p$ reactions at hyperon beam energies of $340GeV\mathrm{/}c$ and $600GeV\mathrm{/}c$. Because of significant production of baryon resonances our predictions for unfavored fragmentation differ from predictions of other models which do not take resonance production into account.