par Ceccopieri, Federico 
;Delvax, Julie ;Favart, Laurent ;Hreus, Tomas ;Marage, Pierre ; [et al.]
Référence European Physical Journal C. Particles and Fields, 73, 2, page (1-26)
Publication Publié, 2013
;Delvax, Julie ;Favart, Laurent ;Hreus, Tomas ;Marage, Pierre ; [et al.]Référence European Physical Journal C. Particles and Fields, 73, 2, page (1-26)
Publication Publié, 2013
Article révisé par les pairs
| Résumé : | Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections σredcc̄ for charm production are obtained in the kinematic range of photon virtuality 2. 5≤Q2≤2000 GeV2 and Bjorken scaling variable 3{dot operator}10-5≤x≤5{dot operator}10-2. The combination method accounts for the correlations of the systematic uncertainties among the different data sets. The combined charm data together with the combined inclusive deep-inelastic scattering cross sections from HERA are used as input for a detailed NLO QCD analysis to study the influence of different heavy flavour schemes on the parton distribution functions. The optimal values of the charm mass as a parameter in these different schemes are obtained. The implications on the NLO predictions for W± and Z production cross sections at the LHC are investigated. Using the fixed flavour number scheme, the running mass of the charm quark is determined. © 2013 The Author(s). |
