Abstract
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 σcc¯red for charm production are obtained in the kinematic range of photon virtuality 2.5≤Q2≤ 2000 GeV2and Bjorken scaling variable3· 10−5≤x≤5· 10−2. The combinations 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.
| Original language | American English |
|---|---|
| Article number | 2311 |
| Journal | European Physical Journal C |
| Volume | 73 |
| State | Published - 2013 |
Disciplines
- Atomic, Molecular and Optical Physics