Modeling of D∗-mesons production in deep inelastic ep scattering processes in KaTie

Abstract

This paper studies the production of D∗-mesons in deep inelastic scattering of electrons on protons within the framework of the leading approximation in the strong coupling constant in the collinear parton model and in the parton Reggeization approach. The hadronization of c-quarks is described within the Peterson fragmentation model taking into account the masses of c-quarks and D∗-mesons. The calculations were performed using the KaTie parton level generator and unintegrated parton distribution functions in the modified Kimber – Martin – Ryskin – Watt model. It is shown that the experimental data of the ZEUS and H1 collaborations, obtained at energies √s = 300 − −319 GeV, are in satisfactory agreement with theoretical calculations, with the exception of the region of high D∗-meson pseudorapidity. No significant differences are observed in the predictions of the collinear parton model and the parton Reggeization approach. Predictions are made for various differential cross sections for the production of D∗-mesons at the EIC collider energy, √s = 140 GeV.