par Aktas, Adil;Favart, Laurent 
;Janssen, Xavier ;Marage, Pierre ;Roland, Benoît ; [et al.]
Référence European Physical Journal C. Particles and Fields, 51, 2, page (271-287)
Publication Publié, 2007
;Janssen, Xavier ;Marage, Pierre ;Roland, Benoît ; [et al.]Référence European Physical Journal C. Particles and Fields, 51, 2, page (271-287)
Publication Publié, 2007
Article révisé par les pairs
| Résumé : | 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 ≤ 100 GeV2 and of inelasticity 0.05≤y≤0.7. Differential cross sections are measured as a function of Q2 and x and of various D*± meson and jet observables. Within the experimental and theoretical uncertainties all measured cross sections are found to be adequately described by next-to-leading order (NLO) QCD calculations, based on the photon-gluon fusion process and DGLAP evolution, without the need for an additional resolved component of the photon beyond what is included at NLO. A reasonable description of the data is also achieved by a prediction based on the CCFM evolution of partons involving the k T-unintegrated gluon distribution of the proton. © Springer-Verlag Berlin Heidelberg 2007. |
