Combination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA
(2013) European Physical Journal C. Particles and Fields — Vol. 73, n° 2, p. 1-26 (2013)
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- 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 σ<inf>red</inf> <sup>cc̄</sup> for charm production are obtained in the kinematic range of photon virtuality 2. 5≤Q<sup>2</sup>≤2000 GeV<sup>2</sup> and Bjorken scaling variable 3{dot operator}10<sup>-5</sup>≤x≤5{dot operator}10<sup>-2</sup>. 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<sup>±</sup> 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).
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Piotrzkowski, K., & et al. (2013). Combination and QCD analysis of charm production cross section measurements in deep-inelastic ep scattering at HERA. European Physical Journal C. Particles and Fields, 73(2), 1-26. https://doi.org/10.1140/epjc/s10052-013-2311-3 (Original work published 2013)