QCD Analysis of the Combined HERA Inclusive Data together with HERA Jet and Charm Data

This talk presents results of the latest combination of inclusive deep inelastic cross sections published by the H1 and ZEUS collaborations at HERA for neutral and charged current $\it e^{\pm}p$ scattering for zero beam polarisation, including charm and jet data. The combined cross sections were used as input to QCD analyses at leading order and next-to-leading order providing a new set of parton distribution functions (PDFs), called HERAPDF2.0Jets. This set is a variation in the HERA-PDF2.0 family set of pdfs which is based on fitting DGLAP evolution equations to HERA data only. The inclusion of charm- and jet-production cross sections made a simultaneous determination of these parton distributions and the strong coupling constant possible, resulting in $\it \alpha_{s}(M^{2}_{Z}) - 0:1183\pm 0:0009 (exp) \pm 0:0005 (model = parameterisation)$ $\pm 0:0012 (hadronisation) ^{+0:0037} _{0.0030}$ (scale). Comparisons of cross sections predictions based on HERAPDF2.0Jets NLO to the input data are excellent