Open charm production at high energies and the quark Reggeization hypothesis

TL;DR

This paper investigates open charm production at high energies using the quark Reggeization hypothesis within the quasi-multi-Regge-kinematics framework, successfully describing experimental data from HERA and Fermilab.

Contribution

It introduces a novel application of the quark Reggeization hypothesis with effective vertices to model open charm production at high energies.

Findings

Accurately describes the proton structure function F_{2,c} at HERA.

Reproduces transverse-momentum distributions of D mesons in photoproduction and hadroproduction.

Validates the quark Reggeization approach for high-energy charm production.

Abstract

We study open charm production at high energies in the framework of the quasi-multi-Regge-kinematics approach applying the quark-Reggeization hypothesis implemented with Reggeon-Reggeon-particle and Reggeon-particle-particle effective vertices. Adopting the Kimber-Martin-Ryskin unintegrated quark and gluon distribution functions of the proton and photon, we thus nicely describe the proton structure function F_{2,c} measured at DESY HERA as well as the transverse-momentum distributions of D mesons created by photoproduction at HERA and by hadroproduction at the Fermilab Tevatron.