Transverse momentum spectra of D and B mesons in hadron collisions at high energies

TL;DR

This paper analyzes the transverse momentum spectra of D and B mesons in high-energy hadron collisions using a modified quark-gluon string model, showing it can describe experimental data well at low to moderate transverse momenta and providing predictions for future LHC experiments.

Contribution

The study introduces a modified quark-gluon string model that accounts for internal quark motion, improving the description of meson spectra at various transverse momenta.

Findings

QGSM describes experimental data at low transverse momentum.

QGSM and NLO QCD together fit a wide transverse momentum range.

Predictions are made for future LHC measurements.

Abstract

Transverse momentum spectra of charmed and beauty mesons produced in proton-proton and proton-antiproton collisions at high energies are analyzed within the modified quark-gluon string model (QGSM) including the internal motion of quarks in colliding hadrons. It is shown that this approach can describe rather satisfactorily the experimental data at not large values of the transverse momentum where the NLO QCD calculation has a big uncertainty. We also show that using both the QGSM and the NLO QCD one can describe these data in a wide region of transverse momenta and give some predictions for the future LHC experiments.