Charmed sea contribution to the inclusive hadroproduction of the mesons with open charm in the Quark-Gluon String Model

The hadroproduction of charmed mesons is discussed within the framework of the modified Quark-Gluon String Model (QGSM) taking into account the decays of corresponding S-wave resonances like D*. It is shown that the estimate of the cc bar - pair contribution to the quark sea of colliding hadrons strongly depends on the parametrization of the function of the leading light quark fragmentation into charmed mesons. A description of the existing experimental data on inclusive spectra and asymmetries of leading and nonleading D- and D*-meson production in πp-, pp- and Σp-collisions is obtained. The predictions for leading/nonleading asymmetry in Σ-p- and Ξ-p-collisions are also given