Next-to-leading-order predictions for D^{*+-} plus jet photoproduction at DESY HERA

Abstract

We study the photoproduction of a D^{*+-} meson in association with a hadron jet at next-to-leading order in the parton model of QCD with non-perturbative fragmentation functions extracted from LEP1 data of e^+e^- annihilation. The transverse-momentum and rapidity distributions recently measured at DESY HERA in various kinematic ranges nicely agree with our theoretical predictions. This provides a useful test of the universality and the scaling violations of the fragmentation functions predicted by the factorization theorem. These comparisons also illustrate the significance of the charm component in the resolved photon. This is elaborated by investigating the cross-section distributions in x_obs^gamma and cos(theta^*).

20 pages, 10 figures

References in corpus (2)

• Perturbative Heavy Quark Fragmentation Function through O(alpha_s^2)
• Isolated photon + jet photoproduction as a tool to constrain the gluon distribution in the proton and the photon

Cited by in corpus (8)

• Collider Physics at HERA
• Measurement of the D* Meson Production Cross Section and F_2^{ccbar}, at High Q^2, in ep Scattering at HERA
• Inclusive jet cross sections and dijet correlations in $D^{\ast \pm }$ photoproduction at HERA
• Charm Production and QCD Analysis at HERA and LHC
• Inclusive photoproduction of D*+- mesons at next-to-leading order in the General-Mass Variable-Flavor-Number Scheme
• Inclusive D* Meson Cross Sections and D* Jet Correlations in Photoproduction at HERA
• Charm photoproduction at HERA: kt-factorization versus experimental data
• Unintegrated gluon distributions in D* and dijet associated photoproduction at HERA