Open charm production in the parton Reggeization approach: from Tevatron to LHC

TL;DR

This paper models inclusive D-meson production at Tevatron and LHC using the parton Reggeization approach with universal fragmentation functions, successfully describing central rapidity data but predicting discrepancies in forward regions.

Contribution

It applies the parton Reggeization approach with universal fragmentation functions to describe D-meson production across different collider energies and rapidities, extending previous methods.

Findings

Accurately describes central rapidity D-meson data from Tevatron and LHC

Uses unintegrated gluon distribution functions in the modeling

Predicts discrepancies in forward rapidity D-meson production at LHCb

Abstract

We study the inclusive hadroproduction of D^0, D^+, D^star+, and D_s^+ mesons at leading order in the parton Reggeization approach endowed with universal fragmentation functions fitted to $e^+e^-$ annihilation data from CERN LEP1. We have described $D$-meson transverse momentum distributions measured in the central region of rapidity by the CDF Collaboration at Tevatron (|y|<1) and ALICE Collaboration at LHC (|y|<0.5) within uncertainties and without free parameters, using Kimber-Martin-Ryskin unintegrated gluon distribution function in a proton. The forward D-meson production (|y|>2.0) measured by the LHCb Collaboration also has been studied and expected disagreement between our theoretical predictions and data has been obtained.