Inspire | HepData | | Eur.Phys.J.C 51 (2007) 271 | DOI: 10.1140/epjc/s10052-007-0296-5 | arXiv:hep-ex/0701023 | DESY-06-240
Inclusive $D^*$ production is measured in deep-inelastic $ep$ scattering at HERA with the H1 detector. In addition, the production of dijets in events with a $D^*$ meson is investigated. The analysis covers values of photon virtuality $2< Q^2 \leq 100$ GeV$^2$ and of inelasticity $0.05 \leq y \leq 0.7$. Differential cross sections are measured as a function of $Q^2$ and $x$ and of various $D^*$ meson and jet observables.
Inspire | HepData | | Eur.Phys.J.C 63 (2009) 171-188 | DOI:10.1140/epjc/s10052-009-1088-x | arXiv:0812.3775
The production of $D^{\pm}$ and $D^{0}$ mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of $133.6 pb^{-1}$. The measurements cover the kinematic range $5 < Q^2 < 1000 GeV^2$, $0.02 < y < 0.7$, $1.5 < p_T^D < 15 GeV$ and $\eta^D < 1.6$. Combinatorial background to the D meson signals is reduced by using the ZEUS microvertex detector to reconstruct displaced secondary vertices. Production cross sections are compared with the predictions of next-to-leading-order QCD which is found to describe the data well. Measurements are extrapolated to the full kinematic phase space in order to obtain the open-charm contribution, $F_2^c\bar{c}$, to the proton structure function, $F_2$.